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 lias a few scattered 
set® 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 short fourth and fifth pairs of cephalothoracic 
legs have the same form and structure as in Eupagurus bernharclus , 
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. The 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 cox® of the penultimate pair of legs pro- 
ject abruptly much below it. The sternal portion of the posterior 
segment does not differ essentially from the same part in Eupagurus 
bernhardus. The inferior edges of the cox® 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 cox® of the posterior cephalothoracic legs. 
This first pair of male appendages, in the single specimen here 
described, are about 7^ mn ' 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 ll^ mm 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- 
