70 J. R. KiNAiiAN on the Britannic Species of 



Carapace broad, shortened, rounded, bearing three teeth on gastric region — 

 one in the centre, and one on each side, fiom which a raised line runs back- 

 wards ; branchial regions smooth. 



External antenna3 short; antennal scale broad, short, terminating in a tooth 

 externally. 



External maxillipeds moderate, their terminal joint somewhat triangular, as 

 broad as penultimate, than which it is slightly longer. 



First pair chelipeds robust, short, the propodos somewhat triangular, palm 

 oblique ; dactylos curved, spiniform ; second pair of chelipeds didactyle, much 

 shorter than first or third ; hyposternal tooth long and lance-shaped. 



Abdomen short, regularly tapering ; first to fifth somite smooth above ; 

 sixth obsoletely carinated ; all the segments furnished on their external aspect 

 Avithalong pointed tooth; telson elongate, triangular, pointed at apex, hollowed 

 above. 



Colour greyish. Gosse describes its colour as a grey pellucid-brown, through 

 which are scattered ruddy golden stars and black pale specks : a speck of 

 opaque white on the fourth somite he looks on as characteristic. 



Length 0*75 inch ; 1-5 inches (Gosse). 



Habitat, sandy bottoms. 



Locality, Dublin, off Skerries ; five fathoms. 



The only Irish specimens I have ever seen or heard of are three captured 

 by Dr. Ball off Skerries, in eight fathoms. In England the si^ecies has been 

 recorded from Hastings by its original describer, and by Mr. Gosse from Wey- 

 mouth. 



The characters of the rostrum, carapace, and abdomen, afford ready means 

 of distinguishing this species from its congeners. 



