HYPERIA, 11 
only differs in the infero-anterior angle of the carpus 
being more strongly developed. Mr. Spence Bate 
has also, in the Catalogue of Amphipoda of the 
British Museum, incorporated Dana’s genus Tauria for 
a similar reason—namely, that the wrists are only de- 
veloped to a very small degree. In the same work 
Mr. S. Bate has also suggested that the species of the 
present genus are but the females of those of Lestrigonus. 
He arrived at this conclusion after examining a consider- 
able number of species of both genera, finding that it is 
difficult, if not impossible, to assert (with reference to 
the structure of the antennz) where one genus com- 
mences and the other ends. Recently, through the 
kindness of Mr. Edward, of Banff, we have had the 
opportunity of examining many fresh specimens both 
of Lestrigonus and Hyperia, from the same locality, and 
we found that all the adult Hyperie of which the sex 
could be detected were females, but that none of the 
Lestrigont were of that sex. 
