198 
GAMMARlDiE. 
AMPHIPODA. PHOXIDES. 
NAT ATOM A. 
Specific character. Inferior antennse not longer than the peduncle of the 
superior, and not furnished with spines on the superior margin. Branches 
of the terminal caudal appendages not hirsute. 
Length 5 2 5 inch. 
Urothoe brevicornis. Spenoe Bate, Cat. Amph. Crust. Brit. Mus. p. 116, 
pi. xx. fig. 1. 
This animal bears so close a resemblance to Urothoe 
marinus , that since it was originally described, we have 
much doubted whether it had not better have been 
described as a variety only. It may be that the dis- 
tinctions are those of sex, but the habitats as yet re- 
corded are very widely apart. 
The antennae are very similar to those in U. marinus , 
but the inferior are rather shorter, and are not furnished 
with those strong spines on the superior margin of the 
first joint of the peduncle, which form so remarkable a 
