BRITISH STALK-EYED CRUSTACEA. (59 



ridge. The antenme are hairy, and are not quite so long as the 

 prolegs. The swimmerets are hairy and bifurcate. 



Mr. Spence Bate describes this species from numerous speci- 

 mens taken in a shrimp-net at Teignmouth, and it has been since 

 dredged off Plymouth ; we have also procured it from the same 

 coast in seven fathoms. 



Pagurus eblaniensis (Kinahan). 

 In the ' Natural History Review,' 1857 (p. 84), Dr. Kinahan 

 describes this species, which he, however, thinks may be a form of 

 the young of P. Bamhardus, and again at p. 161 of the same 

 volume, at the suggestion of Mr. Francis Day, he surmises it 

 may be the true P. tdidianus. 



Fam. PoRCELLANIDiE. 



This family terminates the British Anomoura, and embraces 

 only the genus Porcellana. 



Porcellana platycheles, Lam. 



This crab is of small size, the carapace being seldom over 

 half an inch in length, its breadth being somewhat less. The 

 anterior portion is developed into three blunt prominences, and 

 the rest of the margin is comparatively smootb. The antennae 

 are about twice as long as the carapace. The anterior pair of legs 

 are large and very broad ; they are slightly hairy on their flattened 

 surface, and ciliated on their outer margin with a thick fringe of 

 hair. The next three pairs of legs are armed with a hooked 

 terminal joint, also fringed with hair, and the last pair of legs 

 are simply rudimentary, usually lying on the posterior portion of 

 the carapace. 



The colour of this interesting species is usually of a brownish 

 tint, much lighter beneath, but this shade is much regulated by 

 the locality it inhabits. In the young state, especially, it is 

 extremely difficult to discover unless it moves, for it adheres so 

 closely to the rough stones which it affects, and moreover 

 resembles them so completely in colour, that the most experienced 

 eye will often overlook it. Under these circumstances it is not 

 to be wondered at that we find it widely distributed. Prof. Bell 

 states that it had been sent to him from various parts of the coast 

 from the Orkneys to Land's End. We have ourselves collected 



