PLEONEXES. 
199 
Hab. Torcross, Devon, amongst Sertularim and Alga. 
This is perhaps only the other sex of the preceding. Mr. 
Thompson found them together in Strangford Lough. 
It is perhaps to this genus that the Gammarus spinipes 
of Dr. Johnston is referable (Zool. Journal, iv. p. 417). 
The body is white, with transverse red lines ; hand of second 
pair of legs dilated, tip triangular, one-toed, furnished on 
the under side with a strong spine. Found by Dr. Johnston 
among Sertularia taken from a fishing-boat, so that it pro- 
bably inhabits deep water. 
Gen. 96. PLEONEXES, Spence Bate. 
Upper antennae without secondary appendage. Peduncle 
of the lower antennae reaching nearly to the end of the 
upper antennae. Jaw-feet subcheliform. Posterior true 
legs prehensile. 
Pleonexes Gammapoides, Spence Bate. — Lower an- 
tennae not pediform. Second jaw-foot with hand nearly 
square and larger than the first. 
Penzance (Mr. Barlee). 
