142 



LEUCOSlADJi. 



ridge on each side ; the surface is everywhere distinctly 

 granulated. The first pair of legs are the longest and are 

 equal ; the arm is trihedrons, the wrist short and slightly 

 inflated, the hand rounded, inflated, externally carinated, 

 the fingers furnished with two very minute ridges on the 

 outer surface ; the whole granulated. The remaining pairs 

 of feet are slender, the joints rounded, the terminal one 

 slightly curved. The whole of the parts about the mouth, 

 particularly the foot-jaws, distinctly granulated, the granu- 

 lation appearing almost like minute pearls. The abdomen 

 in the male is triangular and more than twice as long as 

 it is broad ; the third to the sixth joints united, in the 

 female it is much rounded, nearly as broad as it is long, 

 the terminal articulation abruptly much smaller than the 

 preceding, to which it is, as it were, a mere appendage. 



Colour reddish brown, paler beneath, the abdomen in 

 either sex often symmetrically spotted with red. I have a 

 specimen obtained by Mr. McAndrew, and to whom I am 

 indebted for it, which is all over of a lovely bright rose 

 colour. 



This species, which is the largest of the genus, is about 

 five-eighths of an inch long, by two-thirds broad. These 

 are the dimensions of the carapace of a female specimen 

 in my cabinet from the coast of Devon ; and Dr. Leach 

 speaks of female specimens half as large again as his figure, 

 which would correspond with mine, or perhaps rather ex- 

 ceed it. It was first described by Pennant, from speci- 

 mens in the Portland Cabinet, which were probably ob- 

 tained at Weymouth, a locality in which another species, 

 E. Bryerii, was also first discovered. It was afterwards 

 found on the coast of Devonshire, from whence I have 

 obtained it, through the kindness of my friend Walter 

 Buchanan, Esq., who procured it at Exmouth. It is men- 



