. Alaska ... Natural history; Scientific expeditions. 48 RATHBUN basal three fourths thickened; inner flagellum one fourth or one third longer than outer; basal scale reaching only to middle of first segment, its distal outer angle almost a right angle. Antennal scale from three fourths to five sixths as long as carapace, tapering to the extremity, the laminar part of which is rounded, and much exceeded by the spine; peduncle reaching to end of second segment of antennular peduncle; flagellum equaling or exceeding the length of the body. Maxillipeds reaching nearly to end of acicle; first pair
. Alaska ... Natural history; Scientific expeditions. 48 RATHBUN basal three fourths thickened; inner flagellum one fourth or one third longer than outer; basal scale reaching only to middle of first segment, its distal outer angle almost a right angle. Antennal scale from three fourths to five sixths as long as carapace, tapering to the extremity, the laminar part of which is rounded, and much exceeded by the spine; peduncle reaching to end of second segment of antennular peduncle; flagellum equaling or exceeding the length of the body. Maxillipeds reaching nearly to end of acicle; first pair of feet to mid- dle of terminal joint of maxilliped. The right leg of the second pair may slightly exceed or fall short of the tip of the rostrum; merus slightly annulated; carpus with from i8 to 21 joints, those of the proximal half very indistinctly marked, the last joint as long as the two preceding; pro- podus the length of the last four carpal segments, palm longer than digits. Left leg of second pair one third or nearly half again as long as right leg; merus and distal portion of ischium faintly annulated; about 60 carpal segments, hand and fingers much as in the right leg. Third leg of female reaching beyond the rostrum by one third or one fourth the length of the propodus. Fourth leg reaches one third or one half the length of the propodus of the third pair, while the fifth may reach beyond the middle of the propodus of the fourth. Dactyli of the last three pairs contained about four times in their propodi. The third and fourth pairs of legs of the male differ from those of the female in having shorter propodi, that of the third scarcely overreaching the rostrum; the propodus of the third is also recurved instead of straight and narrow at the extremity, forming an oblique margin against which the dactylus folds; the dactyli of the last three pairs are contained about three times in their respective propodi. Abdomen two and a half times as long as carapace, smooth, non-
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectnatural, bookyear1901
