244 BOPYRIM. 



than lobes analogous to those of Ph. Paguri, fustic audatus, 

 &c. The body is rather broadly ovate, nearly symmetri- 

 cal, the head being bent a little to the left ; fla.t on its 

 dorsal surface, its ventral side being concealed by large 

 ovigerous scales, which do not extend over the sides of the 

 body so as to conceal the legs, which are not very robust. 

 The antennae are very minute, and in the middle of the 

 head, on the underside, is a small somewhat semicircular 

 raised lobe. The segments of the tail are continuous 

 with the hinder part of the body, the flattened lateral 

 scales of the former rendering the joints nearly as wide 

 as the latter, the pair of these scales attached to the ter- 

 minal segment are directed backwards and are somewhat 

 more pointed at their extremity. On the ventral surface 

 of the tail are two rows of fleshy somewhat elongate 

 cylindrico-conic appendages, obtuse at their extremities, 

 and which when stretched out do not extend beyond the 

 sides of the tail, and are consequently not visible from 

 above. 



In addition to the specimens obtained from Hermit 

 Crabs described above and in the following pages, we 

 have received an exceedingly minute male, captured 

 on a Pagurus Bernhardus on the coast of Durham, which 

 we cannot satisfactorily assign to its legitimate partner. 

 It is preserved in Canada balsam, and is of an elongate 

 form, somewhat ovate in its general outline, with the 

 sides of the segments of the body and tail regularly 

 rounded, without any wide interval between them. The 

 outer antennae are sufficiently large to extend beyond 

 the sides of the head ; they are three-jointed and seti- 

 gerous at the tip, and the inner antennae are extremely 

 minute and two-jointed ; the mouth appears to consist of a 

 conical tubercle in the middle of the lower surface of the 



