NIPHARGUS FONTANUS. 
319 
A MP HIP OB A. GA MM A RIDES. 
NATATOEIA. 
Specific character. Moderately robust. Coxae of the first four pairs of 
legs nearly as deep as the segments to which they are attached. Gnathopoda 
haying the propoda pear-shaped, with the palm oblique, and as long as the 
superior margin, which is nearly straight ; inferior margin convex and 
posteriorly produced ; palm defined by one or two moveable spines. An- 
terior segments of the tail with the posterior angles pointed. 
Length ^ inch. 
Niphargus fontanus. 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 
