PAGURUS ULIDIANUS. 181 



of P. Bernhardus that it is difficult at first sight to dis- 

 tiiignisli them, especially as the contortion of the termi- 

 nal joint of the ambulatory legs in the latter is not evident 

 in very young individuals. The hand, however, in the 

 present species is more elongate, its sides more nearly 

 [)arallel, and the granulations on its surface more even. 

 It was found by Mr. Thompson at Portaferry. 



