294 gammaridj:. 



being defined ; a few cilia stand upriglit from its surface, 

 and on tlie inferior margin it supports four short rows of 

 hairs. The finger is short and serrated upon the inner 

 margin. The second pair of legs resemble the first very 

 much in form, but they are smaller and less covered with 

 hairs. All the other parts of the animal closely resemble 

 the corresponding parts in M. gryllotalpa. 



The colour in this species is of a yellowish horny 

 appearance, sparingly scattered with black dots, which 

 are less numerous along the dorsal surface, where there 

 are a few bands of a faint pink colour. 



This species was first taken by us in Oxwich Bay, on 

 the coast of Glamorgan. Mr. Robertson has found it 

 amongst Nullipore at Cumbrae, in North Britain ; the 

 Rev. A. M. Norman and Mr. Jeffreys have dredged it in 

 from three to five fathoms in the outer Skerries harbour, 

 Shetland, and Rathke and Liljeborg have taken it on the 

 coast of Norway. 



The animals of this species bear a very close resem- 

 blance to some which we received with M. gryllotalpa, 

 and which we considered as the females of that species. 

 It is, however, the only form which has been taken at 

 Oxwich Bay and on the coast of Norway. Evidence of 

 this kind, indeed, can only bear a negative value ; but so 

 far as our present knowledge extends, this form must be 

 accepted as distinct from the preceding, and which is one 

 of the links gradually leading from the more complexly 

 formed type of M. gryllotalpa to that of the more simple 

 as it exists in the genus Protomedeia. 



