PLEONEXES. 199 



Hab. Torcross, Devon, amongst Sertularia 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 spmipes 

 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 Sertularue 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 antennse reaching nearly to the end of the 

 upper antennse. Jaw-feet subcheliform. Posterior true 

 legs prehensile. 



Pleonexes Gammaroides, Spence Bate. — Lower an- 

 tennae not pediform. Second jaw-foot with hand nearly 

 square and larger than the first. 



Penzance (Mr. Barlee). 



