S. I. Smith — Crustaceans of the Atlantic Coast. 53 



slightly twisted ; the inferior edge, and the superior, except on the 

 terminal portion, are rounded, and the superior has a feAV scattered 

 seta? which become more numerous and regular near the tip, where 

 the edge is compressed and sharp for a short distance. All the distal 

 portion of each of the sliort fourth and fifth pairs of cephalothoracic 

 legs have the same form and structure as in Eupagutnis bernhardtis^ 

 but are a little less hairy. 



The sternal plates between the bases of the ambulatory legs are 

 very narrow, the bases of the first pair being nearly contiguous, and 

 those of the second separated by a triangular plate longer than broad 

 and with its posterior margin excavated. Tlie sternal portion of the 

 penultimate segment of the cephalothorax is much broader than that 

 in front of it, but the calcareous plate, as in Eupagurus, is a slender 

 transverse rod, which is here much above the plain of the sternal 

 plates in front, so that the coxa^ of the penultimate pair of legs pro- 

 ject abruptly much below it. The sternal portion of the posterior 

 segment does not difier essentially from the same part in Eupagurus 

 hernhardus. The inferior edges of the coxse of the posterior pair of 

 legs, however, are compressed below and the sexual orifices are in 

 the posterior side instead of in the ventral edge. 



The sternal portion of the first segment of the abdomen is closely 

 united with the corresponding part of the last cephalothoracic seg- 

 ment, and the first pair of male appendages arise near together and 

 almost between the coxae of the posterior cephalothoracic legs. 

 This first pair of male appendages, in the single specimen here 

 described, are about 7^™"' long and each is composed of a single plate, 

 slightly thickened toward the base, but the distal half expanded into 

 a thin lamella which is rolled into a slightly tapering half tube with 

 its concavity facing inward and posteriorly. The second pair of 

 appendages arise from the sides of the abdomen a considerable dis- 

 tance behind the first pair and are consequently widely separated at 

 their bases. Each one is about 11^'"'" long and composed of a 

 cylindrical basal segment to which is articulated a somewhat longer 

 lamellar terminal segment ; this terminal segment (which is so 

 arranged that, when applied to the grooved surface of the correspond- 

 ing appendage of the first segment, they together form a tube) has, 

 on its anterior side, a shallow groove which terminates on the outer 

 side of the appendage at a point a little way from the tip, and beyond 

 this point the extremity of the appendage narrows into a slender, 

 pointed and hairy tip. 



The appendages of the left side of the third, fourth and fifth 

 abdominal segments, as in the males of Eupagurus., are each com- 



