Harriman Alaska series . 99. Anterior two thirds of carapace carinated. Rostrum from one thirdto one fourth longer than the carapace, and also a little longer than theantennal scale; nearly straight and horizontal; upper limb very narrow,widening a trifle in front of eye, then diminishing to the tip, and armedwith 5 to 7 spines, one of which is on the carapace; anterior tooth atabout anterior third of rostrum; lower limb broader, gradually dimin-ishing forward from a point in front of the eye, armed with about i o to20 teeth and denticles, of which the posterior three or four are of fan-size,
Harriman Alaska series . 99. Anterior two thirds of carapace carinated. Rostrum from one thirdto one fourth longer than the carapace, and also a little longer than theantennal scale; nearly straight and horizontal; upper limb very narrow,widening a trifle in front of eye, then diminishing to the tip, and armedwith 5 to 7 spines, one of which is on the carapace; anterior tooth atabout anterior third of rostrum; lower limb broader, gradually dimin-ishing forward from a point in front of the eye, armed with about i o to20 teeth and denticles, of which the posterior three or four are of fan-size, the remainder very small and decreasing toward the tip, where theyare almost indistinguishable; tip acute. Antennal and pterygostomianspines well and equally developed, the latter unusually high in position. Antennular peduncle reaching two fifths the length of the antennalscale; outer basal spine reaching to about the end of the first segment;second segment one and a half times as long as third; outer flagellum DECAPODS. not attaining end of scale, a little longer in male than in female; innerone exceeding scale. Scale oblong, nearly as long as carapace, laminarportion considerablyexceeding spine; pe-duncle extending tothe middle of the thirdjoint of the antennu-lar peduncle; flagel-lum nearly as long asbody. Themaxillipeds ex-tend to middle of an-tennal scale; first pairof feet nearly to endof antennal peduncle;third, fourth, and fifth pairs Of nearly equal Fin. 35. Spirontocaris barbata. 9. Station 3318. a. Sideofcara-1 tli tli tVi e\ Pace and abdomen (X J*)- b. Dorsal view of anterior portion (X 23). reaching spine on antennal scale; second pair a little shorter. The abdomen is sharply carinated from the middle of the third to theend of the fifth segment; the third to sixth segments terminate in aslender median spine, by which this species differs from all others; thirdsegment with a subterminal hump visible in profile. The fourth segment isprovided with a lateral spine, th
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