. Bulletin - United States National Museum. Science. 192 BULLETIN 54, UNITED STATES NATIONAL MUSEUM. umch .sniallor than the sixth, and, owing- to the shortness of the seventh segment, ends behind about on a line with it, both epimera surpassing the first segment of the pleon. '"Legs of the first pair slender, armed with a long slender dactylus, much curved near its base; propodus expanded with a large palmar lobe armed with a tuarginal row of " ,1^^ eight curved spines; carpus short, with a single cur\'ed palmar spine. Legs of the second and third pair much like the fii'st, but with
. Bulletin - United States National Museum. Science. 192 BULLETIN 54, UNITED STATES NATIONAL MUSEUM. umch .sniallor than the sixth, and, owing- to the shortness of the seventh segment, ends behind about on a line with it, both epimera surpassing the first segment of the pleon. '"Legs of the first pair slender, armed with a long slender dactylus, much curved near its base; propodus expanded with a large palmar lobe armed with a tuarginal row of " ,1^^ eight curved spines; carpus short, with a single cur\'ed palmar spine. Legs of the second and third pair much like the fii'st, but with only six spines on the propodus. Legs of the fourth and posterior pairs slender, armed with spines princi- pally at the distal ends of the ischium, merus, and carpus. 'â 'First segment of the pleon very short and nearly concealed b}' the thoracic segments, narrower than the next three segments, which are al)out equal, acutely produced at the sides so as to resemble in shape the seventh epimeron; fifth segment narrower than fourth, but some- what longer on the median line; telson semi-oval, regular!}" rounded behind and ciliated. Uropods equal- ing the telson; inner angle of basal segment produced, about one-third the length of the inner ranms, which is Ungulate, rounded b e h i n d, slightly shorter than the outer, and less than half as 1)road; outer ramus subovate, spinulose along the outer border; 1)oth rami ciliated except near the base. Length, mm.; breadth, 6 mm. A single specimen of this species, the only one as yet known, was taken at Station 305, latitude 32"" 18' 20" north, longitude 73- 43' west, from a depth of 252 ;"â; ROCINELA CORNUTA Richardson. Rocinela cornuta Richardson, Proc. Amer. Philos. Soc, XXXVII, 1898, p. 12, figs. 1-2; Proc. U. S. Nat. Mus., XXI, 1899, p. 827; Ann. Mag. Nat. Hist. (7), IV, 1899, p. 169; American Naturalist, XXXIV, 1900, p. 219. Locality.âOff Shumagin Bank, Alaska. Dej)tli.â625
Size: 1192px × 2096px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorun, bookcentury1800, bookdecade1870, booksubjectscience
