PAGURUS ULIDIANUS. 181 



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

 tinguish 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 

 parallel, and the granulations on its surface more even. 

 It was found by Mr. Thompson at Portaferry. 



