270 
GAMMA RIDiE. 
very broad in the second. The walking feet are all about 
the same length. The posterior pair of caudal ap- 
pendages are double branched, and the central tail-piece 
is single and squamiform. 
This genus was established by Leach to receive a 
species discovered by Montagu. But Kroyer and 
Dana in following him, have certainly mistaken the de- 
scription of Leach, since the two species which the 
former has described and figured do not belong to this 
genus at all, but to that of Montagua. 
The following vignette represents one of the Plymouth 
fishing-boats denominated locally “ Hookers.” It is from 
a small picture by Condy. 
