294 
GAMMARIDiE. 
being defined ; a few cilia stand upright from its surface, 
and on the 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, 
