NTPH ARGUS FONTANUS. 



819 



AMPHIPODA. 



NAT ATOM A. 



GAMMARIDES. 



NIPHARGUS FONTANUS. 

 (Hogan's Pump Shrimp.) 



Sjiecijic character. Moderately robust. Coxae of the first four pairs of 

 legs nearly as deep as the segments to which they are attached. Gnathopoda 

 having the propoda pear-shaped, with the palm oblique, and as long as the 

 superior margin, which is nearly straight ; inferior mai'gin convex and 

 posteriorly produced ; palm denned by one or two moveable spines. An- 

 terior segments of the tail with the posterior angles pointed. 



Length | inch. 



Xiphargv.s font an us. 



Spence Bate, Proceed. Dubl. Univ. Zool. and Bot. 

 Assoc. 1859. Nat. Hist. Rev. vol. vi. p. 165, 

 fig. 2. Cat. Amph. Brit. Mus. p. 175, pi. xxxii. 

 fig. 2. Hogan, Proceed. Dubl. Univ. Zool. and 

 Bot. Assoc. 1859. Nat. Hist. Rev. vol vi. p. 166. 



This species is much more robust than the preceding. 

 The three anterior segments of the tail have the postero- 

 inferior angle produced to a point, apically furnished in 



