THIRTEEN CUMACEA FR05I THE FIRTH OF CLYDE. 49 



Pseudocuma cercaria Van Beneden. 

 Cyrianassa longicornis Bate, mas. 

 Plentiful in Karnes ^aj, Millport, and a little 

 beyond low water. The females are more plentiful 

 than the males. 



Cumella pygmsea G. O. Sars. 

 C. agilis Norman. 

 Taken plentifully at low water. C umbrae ; Isle of 

 Man ; and Shetland. 



Nannastieus unguiculatus Bate. 

 N. hinoculoides Bate, mas. 

 The female of this species has been taken by me 

 chiefly at the roots of . Laminaria saccharina, and 

 only one or two at a time. Lately I found the 

 male on stones near low water in the small bight 

 on the east side of Karnes Bay, C umbrae, called 

 Portloy, where they were moderately common on 

 the mud or small algae that covered the stones. 

 They were mostly found stretched out at full length, 

 with the caudal appendages spread out. When 

 removed from the stones and put into a vessel with 

 clean water, they seemed to make little or no 

 progress either in walking or swimming, but apj)eared 

 rather inclined to lie with their tail pushed below 

 their body and out under their head. They are 

 sluggish, and when taken make no attempt to 

 escape, but seek rather to maintain such hold as 

 they may have on the stone. They are always 

 covered with mud which is difficult to remove. The 

 male of this species has two eyes, and the female but 

 one. 



