360 



CANCERID^). 



The general colour of " the carapace is light flesh colour 

 brown ; and the first pair of claws almost transparent 

 yellow." The fingers are black or very dark brown. 



I have no hesitation in adopting the view of my friend, 

 Mr. R. Q. Couch, in considering this species as distinct, 

 not only from either of those already described in this 

 work, but from all others previously known. It differs from 

 both the former conspicuously in the distinctly tuberculated 

 hands and wrists, in the entire hairy covering of the three 

 terminal joints of the ambulatory feet, and in the den- 

 ticulated upper margin of their third joint. It differs from 

 X. rwulosa and agrees with X. florida in the depressed 

 form of the rostrum, while it agrees with the former and 

 differs from the latter species in the grooving of the 

 moveable finger. 



For the discovery of this interesting addition to our 

 British Carcinology, we are indebted to Mr. Richard Q. 

 Couch, of Penzance, who has kindly sent me the only 

 specimen I have seen. He informs me that it appears to 

 prefer deeper water than the other two species, as he 

 found it repeatedly in the crevices of the Eschara foliacea, 

 in the deep water off the Runnell Stone, in Mount's Bay, 

 In the summer it approaches the shore and is found under 

 stones. It spawns in June. 



The name of tuberculata has been given to the species by 

 its discoverer, from whom and from his father, Mr. Jona- 

 than Couch, of Polperro, I have had so many claims upon 

 my acknowledgments for their intelligent and ready as- 

 sistance in the progress of the present work. 



