136 Addison E. Verrill, 



stout, nearly as thick as the peduncle and much longer, tapered 

 but little, and is composed of about 15 articles. It is thickly 

 covered on the inner side with long, soft, crooked olfactory hairs, 

 longer than the diameter of the stalk. The outer flagellum, 

 beyond the thick part, is very slender and not so long as the thick 

 part. The other flagellum is slender and longer. 



The carpocerite is shorter, cylindric, about half as long as the 

 antennal scale, somewhat tapered. The antennal scale is large and 

 wide, subovate ; its distal end is sinuous or slightly three-lobed ; 

 its outer angle is dentiform, but scarcely spiniform; inner edge 

 is rather evenly convex; outer edge nearly straight. The basi- 

 cerite has a small acute spine ; the scale is elongated, twice longer 

 than wide, end obtuse, projecting beyond the spine. 



The third maxilliped (pi. 46, figs. 2b, 2c; pi. 47, fig. 4) is 

 elongated and slender with a long terminal article, about three 

 times longer than the preceding one. The terminal article is very 

 hairy having about ten transverse rows of hairs, with clusters of 

 long ones on the margin ; distally the tip is curved to one side and 

 the convex surface and tip are covered by sharp spines, usually 

 about eight, mixed with longer stiff hairs. This is an arrangement 

 of spines that I have not seen in any other genus. 



The first leg or cheliped (pi. 35, fig. 2c) is small, rather short, 

 and usually incurved. Its chela is bent down, not much longer 

 than the carpus and the palm, carpus and merus are about equal 

 in length ; ratio of fingers to the palm is about i : 2.5. Palm 

 tapers distally ; carpus is enlarged distally. Tips of fingers curved, 

 thickly covered with hairs ; dactyl is more acute and more curved. 



The legs of the second pair (pi. 47, fig. 4a) are very slender, 

 with the simple chela slightly thicker than the carpus and about 

 half as long; palm is longer than the fingers. First two articles 

 of the carpus are about as long as the last three combined; first 

 and second are similar in length ; fifth is a little shorter ; fourth 

 is the shortest, about half as long as the first ; the merus is about 

 as long as the first four carpal articles combined. 



The ambulatory legs are biunguiculate. Those of the third and 

 fourth pairs (pi. 46, 2d) have the two terminal claws curved nearly 

 in line with the edges of the curved dactyl, and not much divergent, 

 and the dactyl has four spinules on the inner edge. The propodus 

 is long, about three and a half times longer than the dactyl ; it 

 has about seven or eight spines along the inner margin, besides 



