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Carapace length Stock Photos and Images
RMT1H1XM–Discovery reports (1929) Discovery reports discoveryreports101935inst Year: 1929 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 CARAPACE LENGTHS IN MM Fig. II. Munida subrugosa, males. Bi-monthly graphs of carapace length frequencies reduced to percentages; each individual 'curve of error' drawn in its entirety. APR-MAY JUNE-JULY FEB-MAR
RMMCNM5G–. F'g- I5- Euphausia lucens. a, first furcilia, lateral view; b, cephalothorax, dorsal view; c, telson and lateral uropods; d, second antenna; e, first maxilla; /, second maxilla; g, first cormopod. Second furcilia. Three specimens were found (Fig. 160, b). The average length was 3-5 mm. The anterior margin of the carapace has narrowed to a finely serrated frontal plate. The posterior margin is no longer produced as a dorsal spine, but the inferior margin retains its denticle. The rather small eyes project considerably beyond the margins of the frontal plate. The first and second antennae are
RMRHKKX9–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. = 24 01234567 Basal segment of antennule (mm) Figure 3. Statocyst size relationships. (A) Relationship between sta- tocyst diameter, carapace length, and length of the basal segment of the antennule. The bold and dotted lines are the linear regression lines. Note the high correlation for both body measurement indices. (B) Relationship between length of basal segment of antennule and total number of setae within the statocysts. Note the high level of correlation between the base of the antennule (and hence body size) and the
RMPFFD2T–. Decapod crustaceans of the northwest coast of North America ... Crustacea -- North America. DECAPODS 93 ment, or may not extend beyond the first segment. The antennal peduncle does not reach beyond the second segment of the antennular; the scale is shorter, about two thirds the length of the carapace; more than one half of the last segment of the outer maxilliped extends beyond the scale. The feet are without epi- pods; the first pair reach the end of the scale or extend beyond it. The spine of the fourth abdominal somite p,^ ^ n.- , . .,,.. „ c» .• o c-^ /. v t IG. 40. Spzrottiocans maxtlhp
RMT1H23R–Discovery reports (1929) Discovery reports discoveryreports101935inst Year: 1929 T 1 T I I I I I I r 1 ? 1 14 IG la £0 22 24 26 28 30 32 34 36 38 40 CARAPACE LENGTH IN MM Fig. i6. Munida gregaria, males. Monthly graphs of carapace length frequencies of Falkland Islands specimens. 4-8
RMMCNPPJ–. Fig. 6. Squilla armata}, St. WS 1001, 14. iii. 50, 50-0 m. a, alima, first pelagic stage, length 47 mm.; b, late alima, probably last (rostrum and posterior carapace spine broken), length 20 mm.; c, the same, raptorial claw; d, uropod; e, end of telson. Several Stomatopod larvae were obtained in the plankton round about the area at which the adult Squilla armata occurred, and almost certainly belong to this species (Fig. 6). The oldest larva had the raptorial claw with seven teeth, some of which were still covered but were quite distinct. The uropods are also very like this species. The olde
RMRHMP01–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 12 FIGURE 12. Capillaries closely surrounding individual giant neurosecretory cells within the thoracic ganglion of Eriocheir. Female, 25 mm. carapace length. Capi, capillary. Zenker- formol, paraffin, 8/*, Masson's trichrome stain. Photomicrograph, X 410. FIGURE 13. Capillaries enclosing groups of two or three small cells in the thoracic ganglion of the same specimen as shown in Figure 12. Capi, capillary. Photomicrograph, X 410. DISCUSSION The histological examination of the thoracic ganglion of Eriocheir japonicus showed
RMPFFCTB–. Decapod crustaceans of the northwest coast of North America ... Crustacea -- North America. 172 RATHBUN horns slender, divergent, their outer margins almost longitudinal, their length along the inner margin about one eighth of the entire length of the carapace. Supraocular eave extending laterally not quite so far as in O. gracilis. Postocular spine narrow, as in O. gracilis, and directed a httle more forward than in that species. The interantennular spine is curved a little more forward than in O. gracilis. Eyes a little stouter than in that species. Basal segment of antenna armed along its
RMT0D8NP–The Eastern Bering Sea Shelf The Eastern Bering Sea Shelf : oceanography and resources / edited by Donald W. Hood and John A. Calder easternberingsea00hood Year: 1981 21-22 61-62 101-102 141-142 181-182 41-42 81-82 121-122 161162 CARAPACE LENGTH(MM) Figure 61-12b. Size-frequency distributions of blue king crab from the 1979 survey. Size at recruitment is approxi- mately 135 mm. commercial catch was unknown and biologists were not interested in Tanner crab during early explora- tory cruises for king crab, it was many years before the distributions of C. bairdi and C. opilio in the eastern Beri
RMMCTM42–. Fig. 18. S. crassus. a, Acanthosoma 2; b, Mastigopus i. Mastigopus I (Figs. 18 6, 19 a-g). Length 4-15 mm. Rostrum 075 mm. Rostrum reaching end of peduncle of antennule; basal spine small. Carapace short, its length about i times the breadth. Supraorbital spine very small; marginal spine of Acanthosoma retained. Hepatic spine absent. Dorsal organ minute. Dorsal spines of abdominal somites 1-3 very small, those of 4-6 larger. Pleura rather expanded, with very small points. Telson twice as long as wide, with strong lateral spines; arms of
RMRHM6BB–. The Biological bulletin. Biology; Zoology; Marine biology. GROWTH AND VARIABILITY IN DAPHNIA 451 plot by three straight lines. The first of these can be drawn through the points for the pre-adult instars (1-4), the second through the points for the next eight instars (5-12) and the third through the last eight instars (13-20) represented. The relations between height and total length are similar to those between carapace length and total length. The relations between carapace length and height are dif- ferent. Two lines may be used, one for the first ten instars and a second for the last ten
RMPFFD5G–. Decapod crustaceans of the northwest coast of North America ... Crustacea -- North America. ment of the abdomen; not carinated behind gastric tooth; outline much as in the preceding, as are also the eyes and antennae. Second to sixth abdominal segments inclusive carinate; telson very nearly as long as the sixth segment, less deeply notched than in Pasiphcea cortezia?ia. The side view strongly resembles that of F. corteziana^ from which the carinated ab- domen and shorter carapace without median carina at once distinguish it. Dimensions.—Length of male 6 7 mm., length nf Parana rf» ->-7 mm
RMT0D8NR–The Eastern Bering Sea Shelf The Eastern Bering Sea Shelf : oceanography and resources / edited by Donald W. Hood and John A. Calder easternberingsea00hood Year: 1981 1052 Fisheries biology A 245 - rA . 210 - r I Crab 175 - f 140 A h 105 1 ^^ 70 I r W 35 , , , ,V 1-2 41-42 81-82 121-122 161-162 21-22 61-62 101-102 141-142 181-182 CARAPACE LENGTH (MM) Figure 61-12a. Size-frequency distributions of red king crab from the 1979 survey. Size at recruitment is approxi- mately 135 mm. BLUE KING CRAB 21-22 61-62 101-102 141-142 181-182 41-42 81-82 121-122 161162 CARAPACE LENGTH(MM) Figur
RMMCTN0M–. Fig. 40. Eretmocaris. Species A. III. Fig. 41. Species A. Ill, part of telson. Species A. Ill (Figs. 40, 41) Bermuda. 28. v. 35. Several specimens of same stage. Length 6-o8 mm. Rostrum short and straight, with one dorsal tooth. Carapace with small dorsal tooth and supra-orbital, antennal and pterygostomial spines. Lines on carapace well marked. Abdominal somite 6 three times as long as deep. Telson shorter than uropods, with two pairs of very small lateral spines and 5 + 5 terminal spines, of which the second and fourth are much the longest.
RMRHN7K3–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 6 8 cm FIGURE 2. Carapace length of individual crabs. A indicates the length of 318 mature females, B — the length of 202 immature females.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moor
RMPFFD3R–. Decapod crustaceans of the northwest coast of North America ... Crustacea -- North America. 78 RATHBUN On the few specimens examined the superior teeth are 4; the inferior vary from 4 to 8. Stimpson says that the thick ilagellum of the antennulae extends to the end of the rostrum; this is probably true of the ^ . All the specimens in hand are females, in which the flagellum extends only about two thirds the length of the rostrum. £>imejisions.—Approximate length of $ with eggs 48.4 mm., length of carapace and rostrum 18 mm., of rostrum 10.5 mm. SPIRONTOCARIS FLEXA Rathbun. Spirontocaris c
RMT1H8X5–Discovery reports (1941) Discovery reports discoveryreports20inst Year: 1941 Fig. 47. S. vigilax. Acanthosoma 3. Fig. 48. S. vigilax. Mastigopus i. Mastigopus I (Fig. 48). Length 4-0 mm. Rostrum as long as segment i of antennular peduncle. Carapace with small supra- orbital and hepatic spines. The lateral spines may be entirely lost, or represented by minute vestiges. Posterior dorsal spine rather large.
RMMCTM4J–. Fig. 15. S. crassus. a, Elaphocaris 2; b, Elaphocaris 3. and Acanthosoma i moulted to Acanthosoma 2. The connexion of Acanthosoma with Mastigopus was not proved by moult, but the resemblance in form and colour is so close that we have no doubt of their identity. Description. Elaphocaris 2 (Figs. 15 a, 16). Length 1-2 mm. Rostrum 0-91 mm. Carapace as wide as long, with rather short, stout lateral processes and long posterior spine, reaching to end of body. Telson arms divergent, very slender, more than six times as long as wide; the spines comparatively short; spine 5 shorter than spine 4. Ey
RMRJXW98–. Atoll research bulletin. Coral reefs and islands; Marine biology; Marine sciences. Fig. 4. Sesarma (Labuaniwn) TgardineH. Dorsal view of male, carapace length 28 mm from Nautua, Atafu. (Photo T.R. Ulyatt, National Museum of N.Z.). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Smithsonian Institution. Press; National Research Council (U. S. ). Pacific Science Board; Smithsonian Institution; National Museum of Natural His
RMPFHXNY–. The Danish Ingolf-Expedition. Scientific expeditions; Arctic Ocean. CRUSTACEA MAI,ACOSTRACA. IV. reach that end. Telson with the proximal part of the lateral margins more convex, while these margins are about at their middle more concave than in P. typicus, according to Sars' figure; the end with 3 spines, but a smaller spine is in both specimens observed on one of the coarsely serrated lateral margins near the end. Length of the young male 5.6 mm, of the female with the marsupium rudimentary 5.7 mm. Remarks. By the three keels on the carapace and above all by the curious shape of the narrow
RMT1HN79–Discovery reports (1929) Discovery reports discoveryreports101935inst Year: 1929 LARVAL DEVELOPMENT 2IS Islands form, especially in the large number of spines on the abdominal segments. Differences exist in the arrangement of these spines, in the shape of the antennal scale and in the presence of spines on the whole length of the posterior margin of the carapace. The aciculate form of the antennal scale given by Lebour (1930) as a generic character of Mnnida and stressed as such by Gurney {loc. cit.) is more pronounced in
RMMCTMYE–. Fig. 55. Eretmocaris. Species A. VI. Fig. 57. Species A. VI, maxillipede 2. Fig. 59. Species A. VI, part of telson. Fig. 56. Species A. VI, maxilla, setae of exopod omitted. Fig. 58. Species A. VI, maxillule. Species A. VII (Figs. 60-62) St. 97. 33° 11' S, 16° 55' E. One specimen. Length 10 mm. Rostrum very small, upturned, without dorsal tooth. Carapace without dorsal tooth, and with supra-orbital, antennal and pterygostomial spines. Abdominal somites 1-4 with dorsal spines, pleura rounded.
RMRGGAW3–. Bulletin of the British Museum (Natural History), Geology. 18 GAUDANT & QUAYLE to the tip; the edge is 'feathered' with fine setae. The length of the scale on a specimen with a carapace length of 16 mm is 12-5 mm. On In.61764 and In.61692 can be seen what is possibly an antennal scale. The posterior margin of the carapace is bordered by a ridge; on the branchial region parallel to this ridge there is a line of small, evenly-spaced pits with some isolated pits parallel to them (In.61689). The uropods are slightly longer than the telson, with the margin of the telson being simple (In.61690
RMPFWMJ0–. The Cumacea of the Siboga-expedition. Cumacea; Zoology. c. Fig. 3- Nannastactis hrachydaclyhis n. sp., adult male. a. From the side. /). From above, c. First leg. d. Fifth leg. c. Last somite and Uropod. Carapace about two-fifths of total length, somewhat depressed and not quite twice as long as broad. The dorsal surface is flattened posteriorly, sloping downwards towards the eyes. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original
RMRWX24X–Elements of geology, or, The Elements of geology, or, The ancient changes of the earth and its inhabitants as illustrated by geological monuments elementsofgeolog00lyel Year: 1868 528 FOSSILS OF THE [Oh. XXVI. so that it covers about 25 square feet of ground; and the Limulus Moluccanus, the great King Crab of China and the eastern seas, which, when adult, measures 1 J- foot across its carapace, and is 3 feet -in length. Parka decipiens.—In the same gray paving-stones and coarse roof- ing-slates in which the Cephalaspis and Pterygotus occur, in Forfar- shire and Kincardineshire, the remains of
RMMCMKWT–. a. Fig. 3. Larval stages of Munida. Third stage, length 5-5 mm. b. Fourth stage, length 8-o mm. c. Fifth stage, length 8-5 mm. persist on the fifth. Simple biramous pleopods are present on the second to fifth abdominal segments. The teeth on the posterior border of the carapace are reduced to only four or five. Fine teeth are now present on the dorso-lateral margin of the proxi- mal portion of the rostrum. The antennal scale carries seventeen plumose hairs and the antennule has many more aesthetes on the terminal segment. The total length of the specimen figured was 8-5 mm.
RMRJXWAP–. Atoll research bulletin. Coral reefs and islands; Marine biology; Marine sciences. Fig. 6. Cavdisoma votundvm. Dorsal view of male, carapace length 41.5 from Village Motu, Nukunonu. (Photo T.R. Ulyatt). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Smithsonian Institution. Press; National Research Council (U. S. ). Pacific Science Board; Smithsonian Institution; National Museum of Natural History (U. S. ); United States
RMPFY1PK–. The Eurypterida of New York. Eurypterida; Paleontology. 428 NEW YORK STATE MUSEUM Rooker farm, Pithole City, Venango cc, Pa. The outline is quite reg- ularly semicircular; the posterior parts of the lateral margins slightly concave and the postlateral angles slightly produced but not into distinct mucros as in the original figure. The eyes are small (between one fourth and one fifth the length), the nodes prominent. They are separated b}' a distance about one half the breadth of the carapace. As in other speci- mens from sandy beds, the glabellalike ridge of the middle of the carapace is wel
RMT1HCNM–Discovery reports (1957) Discovery reports discoveryreports28inst Year: 1957 SYSTEMATIC REPORT 105 Length, largest <S, 0/2 mm.; largest $, 10-2 mm. Remarks. This species very closely resembles A. kempii, but may be distinguished by its shorter robust form with the ' telescoped' anterior end; by the almost straight anterior margin of the carapace; by the form of the eyeplates with the well-marked papilla in the middle of each plate, by the absence of serrations on the outer margin of the antennal scale and the absence of an auxiliary tooth; by the presence of three spines on the inner marg
RMMCTM6M–. Fig. I. S. atlanticus. a, Elaphocaris i; b, Elaphocaris 2; c, dorsal spine from side. Description. Elaphocaris i (Fig. i a). Length o-8 mm. Anterior process dividing into three equal denticulate spines. Lateral process curved backwards, denticulate, and without spines. Posterior process about two-thirds length of abdomen, denticulate, without spines. Telson branches long and narrow, the long spines subequal. Elaphocaris 2 (Fig. i b, c). Length 1-3 mm. Rostrum 0-94 mm. Rostrum as long as carapace, with seven spines, rather irregularly arranged. Lateral process with five anterior and four post
![. Bulletin - United States National Museum. Science. DECAPOD CRUSTACEANS OF THE WEST INDIES 119. Figure 30.—Procambarus cubensis cubensis, first form male (carapace length 23.9 mm) from Guane, Pinar del Rio Province, Cuba.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. United States National Museum; Smithsonian Institution; United States. Dept. of the Interior. Washington : Smithsonian Institution Press, [etc. ]; for sale Stock Photo](https://c8.alamy.com/comp/RG79FB/bulletin-united-states-national-museum-science-decapod-crustaceans-of-the-west-indies-119-figure-30procambarus-cubensis-cubensis-first-form-male-carapace-length-239-mm-from-guane-pinar-del-rio-province-cuba-please-note-that-these-images-are-extracted-from-scanned-page-images-that-may-have-been-digitally-enhanced-for-readability-coloration-and-appearance-of-these-illustrations-may-not-perfectly-resemble-the-original-work-united-states-national-museum-smithsonian-institution-united-states-dept-of-the-interior-washington-smithsonian-institution-press-etc-for-sale-RG79FB.jpg ". Bulletin - United States National Museum. Science. DECAPOD CRUSTACEANS OF THE WEST INDIES 119. Figure 30.—Procambarus cubensis cubensis, first form male (carapace length 23.9 mm) from Guane, Pinar del Rio Province, Cuba.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. United States National Museum; Smithsonian Institution; United States. Dept. of the Interior. Washington : Smithsonian Institution Press, [etc. ]; for sale Stock Photo")
RMRG79FB–. Bulletin - United States National Museum. Science. DECAPOD CRUSTACEANS OF THE WEST INDIES 119. Figure 30.—Procambarus cubensis cubensis, first form male (carapace length 23.9 mm) from Guane, Pinar del Rio Province, Cuba.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. United States National Museum; Smithsonian Institution; United States. Dept. of the Interior. Washington : Smithsonian Institution Press, [etc. ]; for sale
![. Decapod Crustacea of Bermuda. Their distribution, variations, and habits. Decapoda (Crustacea). 354 A. E. Verrill—Decapod Crustacea of Bermuda. well defined. Abdomen much like that of occidentalis. Seventh segment of sternum exposed. CoxfB of fifth pair of feet in contact with third abdominal segment. Length of carapace of a young specimen, 7"^"^ ; width, 8""°. Carpus and hand coarsely and densely granulated, rugose above. Carpal spine sharp, pointing forward ; fingers not gaping, a large tooth at the base of the dactyl on the large hand, and a tooth on the hand at the ba Stock Photo](https://c8.alamy.com/comp/PFFCWF/decapod-crustacea-of-bermuda-their-distribution-variations-and-habits-decapoda-crustacea-354-a-e-verrilldecapod-crustacea-of-bermuda-well-defined-abdomen-much-like-that-of-occidentalis-seventh-segment-of-sternum-exposed-coxfb-of-fifth-pair-of-feet-in-contact-with-third-abdominal-segment-length-of-carapace-of-a-young-specimen-7quotquot-width-8quotquot-carpus-and-hand-coarsely-and-densely-granulated-rugose-above-carpal-spine-sharp-pointing-forward-fingers-not-gaping-a-large-tooth-at-the-base-of-the-dactyl-on-the-large-hand-and-a-tooth-on-the-hand-at-the-ba-PFFCWF.jpg ". Decapod Crustacea of Bermuda. Their distribution, variations, and habits. Decapoda (Crustacea). 354 A. E. Verrill—Decapod Crustacea of Bermuda. well defined. Abdomen much like that of occidentalis. Seventh segment of sternum exposed. CoxfB of fifth pair of feet in contact with third abdominal segment. Length of carapace of a young specimen, 7"^"^ ; width, 8""°. Carpus and hand coarsely and densely granulated, rugose above. Carpal spine sharp, pointing forward ; fingers not gaping, a large tooth at the base of the dactyl on the large hand, and a tooth on the hand at the ba Stock Photo")
RMPFFCWF–. Decapod Crustacea of Bermuda. Their distribution, variations, and habits. Decapoda (Crustacea). 354 A. E. Verrill—Decapod Crustacea of Bermuda. well defined. Abdomen much like that of occidentalis. Seventh segment of sternum exposed. CoxfB of fifth pair of feet in contact with third abdominal segment. Length of carapace of a young specimen, 7"^"^ ; width, 8""°. Carpus and hand coarsely and densely granulated, rugose above. Carpal spine sharp, pointing forward ; fingers not gaping, a large tooth at the base of the dactyl on the large hand, and a tooth on the hand at the ba
RMT1HXY8–Discovery reports (1956) Discovery reports discoveryreports27inst Year: 1956 374 DISCOVERY REPORTS Third calyptopis. Eleven specimens examined (Fig. 240, b). Length range 2-4-2-9 mm.; average length 2*7 mm. The carapace is unchanged except for the appearance of the rudiments of the dorsal crest. The inferior margin is smooth. The compound eyes are globular and pigmented. The basal segment of the first antennal peduncle bears a strong toothed spine on its outer, distal margin. This reaches to about the middle of the last peduncular segment. 0-25mm Fig. 24. Nematoscelis megalops. a, third c
RMMCTPEB–. Fig. 8. Stenopid III. St. 1580. Stenopid IV (Fig. 9) 'Atlantis' St. 1121 Stage IX?. Length 11-6 mm. (rostrum 2 mm.). Rostrum extending just beyond peduncle of antennule. Supra-orbital spine minute. Carapace deeply grooved in front and behind, rounded behind. Abdominal somite 3 with large dorsal spine. Somites 1-5 with pleural spines, those of somite i very large, and all pointing slightly forwards. Somites 5 and 6 with small dorsal spine, the latter without lateral spine. Legs 1-3 chelate, very large. This is no doubt the last larval stage, and contrasts very much in size with the equivalent
RMRNAG3R–. The anatomical record. Anatomy; Anatomy. Fig. 4 Transverse section through the otic capsule of an embryo having a carapace-length of 5.2 mm., showing the extension of the fenestral plate of colu- mella dorsally and the crista basipterygoidea. X 40. Fig. 5 Transverse section through the otic capsule of an embryo having a carapace-length of 8 mm., showing the relations of columella, stapes inferior, first branchial cleft, and extracolumella. X 40. basale and continues as a longitudinal rod parallel to the.lateral margin of the planum basale and connected with it by a mass of dense mesenchyme (
RMPFEEXF–. A descriptive catalogue of the Indian deep-sea Crustacea Decapoda Macrura and Anaomala, in the Indian museum. Crustacea; Decapoda (Crustacea). 2:30 ii. The chelipeds of the male are more than twice the length of the body 2. Eyes very large, their major diameter being about one-fourth the length of the carapace proper. The chelipeds of the male may be nearly as long as the body (though occasionally they are half again as long as the body) ... III. The 2nd abdominal tergum has a row of spines on its anterior border, and the 3rd tergum also may have a pair of spines on this border. Posterior bo
RMT1H93W–Discovery reports (1957) Discovery reports discoveryreports28inst Year: 1957 58 DISCOVERY REPORTS the circumstances I have removed some of the appendages in order to make accurate drawings of them. Distribution. Open ocean to the west of Saldanha Bay, South Africa, captured in a closing net fishing between 1600 m. and 1000 m. Eucopia sp. Occurrence: v &• 7 / St. 295. 26. viii. 27 (day). West of Sierra Leone, 270o-250o(-o) m., 1 damaged imm. specimen, estimated length 12 mm. Remarks. This specimen is too damaged to be described fully. The anterior end of the carapace and the eyes are distorte
RMMCTKXM–. Fig. 30. S. corniadum A. a, Elaphocaris i; b, Elaphocaris 2. Elaphocaris 2 (Fig. 30 h). Length 1-3 mm. Rostrum 0-85 mm. Rostrum simple, with four pairs of long spines at base. Carapace with a pair of long lateral spines and a group of about ten long spines springing from an elevation of the carapace at the base of the lateral spines. Posterior margin of carapace with a dorsal spine as long as the abdomen and a transverse row of 14 long spines. Dorsal organ very large. Telson arms very short, as wide as long, spine 5 considerably shorter than spine 4. Eye very large, asymmetrical, width of ey
RMRGF6CW–. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. 120 BULLETIN : MUSEUM OF COMPARATIVE zooLOGi- ^r. harbouri a sizable series is available, and there is some varia- tion which seems to be correlated with the size of the animal. The fourteen specimens with a carapace length of less than 120 mm. possess flaps, generally quite small ones, a specimen with a carapace about 120 mm. long has only a ridge, and the four larger ones have nothing. In G. geographica, three specimens with carapace lengths of less than 110 mm. have small flaps while ones of 90 and 220 mm. have onl
RMPFFCW5–. Decapod crustaceans of the northwest coast of North America ... Crustacea -- North America. than in N. ovifer, and the anterior margin (against which the dactylus fits) in consequence more longitudinal. The first and second abdominal segments are without a carina; that on the thii-d and fourth segments is rather feebly developed. Dimensions. — Male, length 31 mm., length of carapace ^.6 mm. Type locality fathoms [Albatross station 3664) Additional localities.—Off Santa Cruz Island, CaHfornia, 155 fathoms, station 2949; south of Santa CataHna Island, 59 fathoms, station 3665 (specimen 39 mm.
RMT1H5K7–Discovery reports (1941) Discovery reports discoveryreports20inst Year: 1941 LARVAE OF SERGESTES 25 Elaphocaris 3 (Fig. 15 b). Length i-86. Rostrum i-omm. Rostrum much shorter in proportion than in stage 2, but about as long as carapace. Supraorbital, lateral and posterior processes very hispid. Supraorbital longer than eye. Telson as in stage 2. Abdominal somites with very small pleural spines, and with very small dorsal points. Eye about three-quarters length of carapace, the eyeball asymmetrical. Papilla not seen in dorsal view. Colour. Red in rostrum, and two lines down thorax and abdome
RMMCTM49–. / V Fig. 16. S. ciassiis. Elaphocaris 2, ventral. A, frontal sensor)' papilla; B, ocular papilla; C, maxillule; D, maxilla; E, maxillipede i; F, maxillipede 3. Fig. 17. S. crassus. Acanthosoma i; a, antenna; b, telson. Acanthosoma i (Fig. 17 a, b). Length 2-55 mm. Rostrum 0-85 mm. Rostrum very spiny, with large basal spine. Supraorbital spines very small. One pair of small lateral spines. Margin of carapace with a row of spinules continuous with the spinules of the lateral spine. Dorsal organ very small. No posterior dorsal spine. Abdominal somites with dorsal spines i and 2 smaller than 3-6
RMRGEP86–. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Figure 17. Vent'al (AMS 21434). view of the skull of C. parkeri Hatching under natural conditions appears to occur at a carapace length of about 35 mm. A recent hatchling caught by Parker at Sigabaduru on January 17 measured 36 mm, while another from Balumuk, caught on February 19, measured 37 mm. C. siebenrocki apparently occurs sympat- rically with CJwlodina novaeguineae, Emy- dura subglobosa and Elseya novaeguineae, and possibly Carettochelys insculpta and Pelochelys bibroni. DISCUSSION Nomenclature. The major nome
RMPFWMK0–. The Cumacea of the Siboga-expedition. Cumacea; Zoology. 11 I. Nannastacus Hanseni n. sp. (Text-fig. i, aâe). Description of adult Male. Total length 1,5 mm. Carapace about two-fifths of total length, broader than deep, dorsal surface depressed in the middle line between the swollen branchial regions and elevated posteriorly into a bilobed prominence which overhangs the succeeding somites. Pseudorostrum, seen from the side, hori- zontal, truncate. Antero-lateral angle slightly produced forwards, bluntly pointed and obscurely serrate. Seen from above the pseudorostral plates do not meet either
RMT1HC8P–Discovery reports (1937) Discovery reports discoveryreports14inst Year: 1937 8 DISCOVERY REPORTS Antennule. The flagella are longer in proportion to the body length than those in the previous stage, but in preserved material they are usually broken off. Sensory fila- ments are present at the base of the outer flagellum. The lobes on the anterior margins of the basal segments are more pronounced (Fig. 25 c). Fig. 25. Sixth Furcilia. a, carapace (x 13); b, uropod and telson ( x 35); c, antennules and rostrum ( x 35); d, antenna ( x 35); e, mandible ( x 60); /, first maxilla ( x 83); 0, seco
RMMCTM3A–. Fig. 23. S. robustiis. a, Mastigopus i; b, Mastigopus 2; c, telson; d, telson, stage i. Eye about one-sixth length of body, with small, nearly round, eyeball, and no anterior papilla. Labral spine absent. Mandible without palp. Legs with small vestiges of exopods. Pleopods very long; i and 2 without endopods; 3-5 with very small rudiments of endopods. Uropods nearly seven times as long as wide (67 : i), the large outer spine in middle of margin. In stage 2 (Fig. 23 b, c) the carapace has lost its dorsal and lateral spines, and the dorsal spines on abdominal somites 1-3, but the antennal flag
RMRHKKYA–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 2345678 Basal segment of antennule (mm) B 300 250 200 150 100 50-. = 24 01234567 Basal segment of antennule (mm) Figure 3. Statocyst size relationships. (A) Relationship between sta- tocyst diameter, carapace length, and length of the basal segment of the antennule. The bold and dotted lines are the linear regression lines. Note the high correlation for both body measurement indices. (B) Relationship between length of basal segment of antennule and total number of setae within the statocysts. Note the high level of correlati
![. The Eurypterida of New York. Eurypterida; Paleontology. THE EURYPTERIDA OF NEW YORK 415 convex, the antelateral angles prominent, well rounded; the basal margin straight transverse. The lateral eyes are large, a little more than one third the length of the carapace, subcircular, situated as stated. The type is 4.7 mm long and 5.5 mm wide. Stylonunis modestus nov. See text figures 99-101 This species is based on several small carapaces with portions of the abdomen and a leg [see text fig. 99] which suggest the following description: Carapace subrectangular, broad, length to width as 5:8. Late Stock Photo](https://c8.alamy.com/comp/PFY1R3/the-eurypterida-of-new-york-eurypterida-paleontology-the-eurypterida-of-new-york-415-convex-the-antelateral-angles-prominent-well-rounded-the-basal-margin-straight-transverse-the-lateral-eyes-are-large-a-little-more-than-one-third-the-length-of-the-carapace-subcircular-situated-as-stated-the-type-is-47-mm-long-and-55-mm-wide-stylonunis-modestus-nov-see-text-figures-99-101-this-species-is-based-on-several-small-carapaces-with-portions-of-the-abdomen-and-a-leg-see-text-fig-99-which-suggest-the-following-description-carapace-subrectangular-broad-length-to-width-as-58-late-PFY1R3.jpg ". The Eurypterida of New York. Eurypterida; Paleontology. THE EURYPTERIDA OF NEW YORK 415 convex, the antelateral angles prominent, well rounded; the basal margin straight transverse. The lateral eyes are large, a little more than one third the length of the carapace, subcircular, situated as stated. The type is 4.7 mm long and 5.5 mm wide. Stylonunis modestus nov. See text figures 99-101 This species is based on several small carapaces with portions of the abdomen and a leg [see text fig. 99] which suggest the following description: Carapace subrectangular, broad, length to width as 5:8. Late Stock Photo")
RMPFY1R3–. The Eurypterida of New York. Eurypterida; Paleontology. THE EURYPTERIDA OF NEW YORK 415 convex, the antelateral angles prominent, well rounded; the basal margin straight transverse. The lateral eyes are large, a little more than one third the length of the carapace, subcircular, situated as stated. The type is 4.7 mm long and 5.5 mm wide. Stylonunis modestus nov. See text figures 99-101 This species is based on several small carapaces with portions of the abdomen and a leg [see text fig. 99] which suggest the following description: Carapace subrectangular, broad, length to width as 5:8. Late
RMT1H5NT–Discovery reports (1937) Discovery reports discoveryreports14inst Year: 1937 26 DISCOVERY REPORTS SECOND CALYPTOPIS The average lengths and ranges of length for varying numbers of 2nd Calyptopis are stated in Table IX. The range of forty-eight larvae, the largest number measured in one sample, is between 2-38 and 2-96 mm. and the average is 2-71 mm. The smallest larva measured was 2-13 mm. and the largest 3-33 mm. The carapace is evenly rounded and there are no lateral denticles (Figs. 5 a, b). The abdomen is segmented, and in lateral view the developing uropods can be seen within the integu
RMMCTNXB–. a i, aVi, a iv, thoracic limbs I, II and IV ( x 32); b i-b viii, gills ( x 83), Th. VII shown with gill. biv ^^ vy Dvii Fig. 24. Fifth Furcilia (continued). c, c ii, c V, pleopods I, II and V ( x 35). SIXTH FURCILIA The frequency of occurrence and average lengths of larvae belonging to this stage are stated in Table XXXVII. The rostrum (Fig. 25 a, c) is much more acutely pointed than in the previous stage. The lateral denticle is conspicuous, and the emargination of the posterior border of the carapace is as shown in Fig. 25 a. The telson length is more than six times the width at the inser
RMRHP6WM–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 420 FIG. 1. Distribution of a population of Chydonis sphccrlcus according to length (after Werner). tend to run together and are not so easily identified. Since the size groups are not entirely distinct over the pre-adult range and the past history of each individual is not known, the conclusion that all indi-. FIG. 2. Diagram showing methods of making measurements. T—total length, longest dimension of animal exclusive of spine. C—carapace length, longest di- mension of carapace exclusive of spine. H—height, the shortest dis
RMPFFD5P–. Decapod crustaceans of the northwest coast of North America ... Crustacea -- North America. DECAPODS the telson is longer than the sixth segment, and at the posterior end is notched with a very shallow V-shaped sinus, so shallow that the extremity can hardly be called ' forked.' Dimensions.— Length of female 8i mm., of carapace t^^.t, mm. Distributio7i.— Santa Barbara Chan- nel, California, 265 to 322 fathoms {Albatross stations 2903, 2904, 2960, p.^. 4. Pasiph^a emarginata. 5. Station 3200, and 3201). Gulf of California, ^dsontx^it ^''^^^ °^ <:a^^pace (x ij). b. off Concepcion Bay, Lower
RMT1H6YY–Discovery reports (1941) Discovery reports discoveryreports20inst Year: 1941 LARVAE OF SERGESTES 37 Description. Elaphocaris i (Fig. 28 a). Length 0-64 mm. Anterior process quadrifid at end. Lateral process curving backwards, with seven spines. Posterior process with two pairs of spines. Dorsal organ present, small. Telson arms divergent, slender, spine 5 of same length as 4. Elaphocaris 2 (Fig. 28 b-d). Length about i mm. Rostrum 0-64 mm. Rostrum as long as carapace, swollen at base, where it bears four spines dorsally on either side. Lateral process long, hispid, directed backwards. The hi
RMMCTKWA–. Fig. 31. S. corniculiim B. a, Elaphocaris 3, lateral; b, ventral. The Elaphocaris which is regarded as belonging to Acanthosoma form B (Fig. 31) differs in stage 3 from the form described above only in having fewer spines on the lateral and posterior parts of the carapace. The former group is of nine spines while there are only five on each side of the posterior median spine (Fig. 31 a). Colour. A large bright red patch just behind centre of thorax; otherwise colourless. Acanthosoma i (Fig. 32 a). Length 3-28 mm. Rostrum i-i mm. Rostrum longer than antennule, with basal spine rather large. S
![. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. GROWTH AND VARIATION IN DAPHNIA MAGNA 91 of the previous instar. These values correspond to the " Wachstums- quotienten " of Rammner (1930) and others. For those cases in which the individuals were primiparous in the sixth instar the value is fairly. 3 4 FIG. 7. Lo<y /// plots of the relations between carapace length and total length C/T, height and total length H/T, and height and carapace length H/C during each instar for different classes of animals reared on the oatmeal modification—the same for which growth Stock Photo](https://c8.alamy.com/comp/RHMW2M/the-biological-bulletin-biology-zoology-biology-marine-biology-growth-and-variation-in-daphnia-magna-91-of-the-previous-instar-these-values-correspond-to-the-quot-wachstums-quotienten-quot-of-rammner-1930-and-others-for-those-cases-in-which-the-individuals-were-primiparous-in-the-sixth-instar-the-value-is-fairly-3-4-fig-7-lolty-plots-of-the-relations-between-carapace-length-and-total-length-ct-height-and-total-length-ht-and-height-and-carapace-length-hc-during-each-instar-for-different-classes-of-animals-reared-on-the-oatmeal-modificationthe-same-for-which-growth-RHMW2M.jpg ". The Biological bulletin. Biology; Zoology; Biology; Marine Biology. GROWTH AND VARIATION IN DAPHNIA MAGNA 91 of the previous instar. These values correspond to the " Wachstums- quotienten " of Rammner (1930) and others. For those cases in which the individuals were primiparous in the sixth instar the value is fairly. 3 4 FIG. 7. Lo<y /// plots of the relations between carapace length and total length C/T, height and total length H/T, and height and carapace length H/C during each instar for different classes of animals reared on the oatmeal modification—the same for which growth Stock Photo")
RMRHMW2M–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. GROWTH AND VARIATION IN DAPHNIA MAGNA 91 of the previous instar. These values correspond to the " Wachstums- quotienten " of Rammner (1930) and others. For those cases in which the individuals were primiparous in the sixth instar the value is fairly. 3 4 FIG. 7. Lo<y /// plots of the relations between carapace length and total length C/T, height and total length H/T, and height and carapace length H/C during each instar for different classes of animals reared on the oatmeal modification—the same for which growth
RMPFWM9P–. Cumacea (Sympoda). Cumacea. Cumacea: 1.Vaunthompsoniidae, 3. Bathycuma, 2. Sympodommatidae, 1. Sympodomma 15 Pseudorostrum acute, slightly upturned, the lobes meeting for a short distance in front of the little triangular eyeless eyelobe. Carapace about a quarter of the body's total length, rough with minute denticles, the medio- dorsal line carinate, the first 3^ showing spinules in double line, commencing on the eyelobe and fading away into a single line towards or to the hind margin. 1^* pedigerous segment seemingly united to the carapace. Pleon segments 1—5 with lower borders flat- tened
RMMCTM8M–. a. Rostrum. d. Maxilla. Fig. 29. Thalassinid D. XVII. St. 406. b. Telson. e. Maxillipede i. /. Leg i. c. Palp of maxillule. g. Leg 2. Legs I and 2 with large chelae, the palm wider than long. Legs 3 and 4 with propod rather broad. Leg 5 without exopod. Epipods absent. Pleopods on somites 3-5 very stout. Uropods large. Callianassa? B.R. IX (Fig. 30) Barrier Reef St. 46. Total length 6-4 mm. Rostrum narrow, serrated, not much longer than antennule. Carapace with small spine at anterior angle and three small marginal spines. Abdomen: somites 1-5 without spines; somite 6 with a small dorsal spin
![. Bulletin - United States National Museum. Science. v"' *r.. Figure 49.—Goniopsis cruentata, male (carapace length 36.2 mm) from Dominica station 112. Eyestalks purplish with black cornea. Thu*d maxillipeds with ischium white, proximal portion of merus bluish, and distal portion of merus and entire carpus and dactyl purple, propodus cream; exopod white with mesial margin purple. Cheliped with coxa, basis, and ischium cream to white and with purple band across distal articulations of coxa and purple spots along anterior margin of basis; merus mostly dark pm'plish red with purple splotches Stock Photo](https://c8.alamy.com/comp/RG799N/bulletin-united-states-national-museum-science-vquot-r-figure-49goniopsis-cruentata-male-carapace-length-362-mm-from-dominica-station-112-eyestalks-purplish-with-black-cornea-thud-maxillipeds-with-ischium-white-proximal-portion-of-merus-bluish-and-distal-portion-of-merus-and-entire-carpus-and-dactyl-purple-propodus-cream-exopod-white-with-mesial-margin-purple-cheliped-with-coxa-basis-and-ischium-cream-to-white-and-with-purple-band-across-distal-articulations-of-coxa-and-purple-spots-along-anterior-margin-of-basis-merus-mostly-dark-pmplish-red-with-purple-splotches-RG799N.jpg ". Bulletin - United States National Museum. Science. v"' *r.. Figure 49.—Goniopsis cruentata, male (carapace length 36.2 mm) from Dominica station 112. Eyestalks purplish with black cornea. Thu*d maxillipeds with ischium white, proximal portion of merus bluish, and distal portion of merus and entire carpus and dactyl purple, propodus cream; exopod white with mesial margin purple. Cheliped with coxa, basis, and ischium cream to white and with purple band across distal articulations of coxa and purple spots along anterior margin of basis; merus mostly dark pm'plish red with purple splotches Stock Photo")
RMRG799N–. Bulletin - United States National Museum. Science. v"' *r.. Figure 49.—Goniopsis cruentata, male (carapace length 36.2 mm) from Dominica station 112. Eyestalks purplish with black cornea. Thu*d maxillipeds with ischium white, proximal portion of merus bluish, and distal portion of merus and entire carpus and dactyl purple, propodus cream; exopod white with mesial margin purple. Cheliped with coxa, basis, and ischium cream to white and with purple band across distal articulations of coxa and purple spots along anterior margin of basis; merus mostly dark pm'plish red with purple splotches
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