564 REPORT OF COMMISSIONER OF FISH AND FISHERIES. 



both propodus and carpus densely clothed with long, stiff hairs. Carpus 

 in the second pair of legs short, with an angular prominence upon the 

 posterior side ; propodus as long as in the first pair, and much broader, 

 the palmary margin oblique, projecting at the inferior angle, just inside 

 of which there is a deep sinus in the margin. Posterior edges of the 

 bases of the sixth and seventh pairs of legs unarmed. 



In the female the antennae are shorter and not quite as stout, and the 

 hands of the first and second pairs of legs are very much shorter, 

 smaller, and much less hairy ; in the first pair the carpus and propodus 

 are very much shorter and proportionally broader, and the palmary 

 margin of the propodus more oblique; in the second pair the propodus 

 is short and somewhat oval, with a slight prominence at the inferior 

 angle of the palmary margin. 



Length, 6-9 mm . 



ISTew Jersey; Great South Bay, Long Island ; Vineyard Sound. Com- 

 mon among eel-grass in sheltered situations. The young, even 5 or mm 

 long, were taken at the surface in Vineyard Sound several times. 



Amphithoe compta Smith, sp. nov. (p. 370.) 



Eyes small, round, red in life, but fading in alcohol to whitish. An- 

 tennula slender, as long as the body ; first segment of the peduncle as 

 long as the head ; second slightly longer than" the first ; last a third as 

 long as the second ; flagellum very slender, nearly three times as long 

 as the peduncle. There is a rudimentary secondary flagellum, not 

 longer than the first two segments of the primary flagellum and very 

 slender. .Antenna a little shorter than the antennula; the peduncle 

 very little shorter than that of the antennula; last two segments about 

 equal in length, the penultimate reaching as far as the same segments 

 of the antennula ; flagellum about as long as the peduncle. First an d 

 second pairs of legs, in the male, about equal in size, as long as the head 

 and thorax together, and clothed on both margins with long, plumose 

 hairs. Carpus in the first pair longer than, and as broad as, the pro- 

 podus, the distal extremity truncate and right-angled at the inferior mar- 

 gin ; the propodus much longer than broad, the palmary margin oblique, 

 very nearly straight, and armed at the inferior angle upon the inner side 

 with a stout spine. Carpus in the second pair narrower than in the first, 

 the distal extremity obliquely rounded at the inferior angle; propodus 

 as long as the carpus and no broader, the palmary margin less oblique 

 than in the first pair, without any spine, and the inferior angle slightly 

 projecting ; dactylus, strongly curved and closing by the margin of the 

 propodus. In the female the legs of the first and second pairs are nearly 

 alike in form, very much smaller and weaker than in the male, and only 

 sparsely clothed with mostly simple hairs, except upon the inferior margin 

 of the carpus in the second pair. In both pairs the carpus is about as long 

 and broad as the propodus ; the propodus is short, narrowed toward the 

 carpus, the palmary margin oblique, convex in outline, with the infe- 

 rior angle rounded and armed with a stout spine on the inside. Second 



