BATHYPOREIA. 
303 
second are slender and have the finger wanting. The 
last pair of the caudal appendages terminate in two 
branches, one being short, the other long and bi-arti- 
culate. The central tail-piece is double. 
This genus, as far as we know, is confined to the 
shores of Northern Europe. 
By a singular coincidence, in all the specimens that we 
have seen the first pair of legs are damaged or wanting, 
so that we have not been able to determine their 
structure. We have, therefore, drawn up our character 
of this important organ from the figure and description 
of Lindstrom. 
