. Alaska ... Natural history; Scientific expeditions. 32 RATHBUN segment, a minute black ocellus above and toward the outside, and be- yond the limit of the Fig. lo. Urocaris infraspinis. 9 (X Ss)- . Locality unknown, a. Side. b. Dorsal view of anterior portion. Antennular peduncle nearly as long as carapace, exclusive of rostrum; first segment broad, its thin outer margin armed with a spine on the basal portion and another at the extremity; the inner angle of the lateral ex- pansion is advanced beyond the articulation of the second joint; second and third segments subequal and togeth
. Alaska ... Natural history; Scientific expeditions. 32 RATHBUN segment, a minute black ocellus above and toward the outside, and be- yond the limit of the Fig. lo. Urocaris infraspinis. 9 (X Ss)- . Locality unknown, a. Side. b. Dorsal view of anterior portion. Antennular peduncle nearly as long as carapace, exclusive of rostrum; first segment broad, its thin outer margin armed with a spine on the basal portion and another at the extremity; the inner angle of the lateral ex- pansion is advanced beyond the articulation of the second joint; second and third segments subequal and together nearly equal to the first. The acicle is oblong, extremity oblique, produced at inner angle away beyond outer spine, which is in line with end of antennular peduncle. The an- tennal peduncle scarcely reaches end of first antennular segment; fla- gellum as long as body. The outer maxillipeds extend to the middle of the last joint of the an- tennal peduncle. The first pair of feet reach the spine of the acicle; merus, carpus, and propodus subequal, palm and fingers subequal. The second pair of feet are as long as the distance from the end of the ros- trum to the posterior end of the first abdominal somite; the ischium, merus, and carpus subequal, palm a little shorter, swollen; fingers nearly as long as palm. Last three pairs of feet reaching about to end of acicle; dactyli short, with a slender spine on the under side. Abdomen geniculated at the third segment. Posterior margin of all the segments truncate. Sixth segment shorter than carapace (rostrum excluded), less than twice as long as fifth segment, and a little longer than the telson. Telson with two pairs of lateral spines, the outer uropods much longer than the telson, the inner uropods intermediate in length between the outer pair and the telson. Dlmensmis.—Length of carapace and rostrum of ovigerous $ 6 mm., of rostrum mm., of abdomen 15 Please note that these images are extracted from scanned page images t
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectnatural, bookyear1901
