AMPHIPODA OF THE BRITISH ISLES. 153 
portion of the propodos bordering the palm and its inferior 
angle differs from the rest of the joint in presenting a peculiar 
stippled and striated appearance ; and it is evidently this that is 
represented by the shading in Spence Bate’s figure in the ‘ Hist. 
Brit. Sessile-eyed Crustacea,’ p. 323. This “ marginate” appear- 
ance is not so marked in the larger specimen from Marlborough 
(see figs. 3, gz.', gn.’), nor in the specimens from Munich, and the 
tufts of sete on the inferior margin of the propodos are more 
numerous. The first gnathopod is considerably shorter and 
rather stouter than the second; and may also be distinguished 
from it by the long curved seta on the meros, which is present 
just in the same position as in LV. subterraneus, in which species 
the two gnathopoda are not so easily distinguished. 
The large size of the inner and outer lobes of the maxillipedes 
is another point that readily separates this species from JV. sub- 
Lerraneus. 
The terminal uropoda do not appear to become so elongate as 
in NV. subterraneus, but the specimens at my disposal are not 
sufficient to enable me to say how far they differ in the two 
Sexes. 
NripHareus FonTaNus, Spence Bate. 
- 1859. Niphargus fontanus, Spence Bate, Proc. Dublin Univ. Zool. & 
Bot. Assoc. i. p. 288, figs. 2 & 2a; Nat. Hist. Rev. & Quarterly 
Journal of Science, vol. vi. p. 165, fig. 2. 
Niphargus fontanus, Hogan, Proc. Dublin Univ. Zool. & Bot. 
Assoc. i. p. 240; Nat. Hist. Review, vol. vi. p. 166. 
1862. Niphargus fontanas, Spence Bate, Cat. Amphip. Brit. Mus. p. 175, 
pl. xxxii. fig. 2. 
1863. Niphargus fontanus, Spence Bate & Westwood, Brit. Sessile-eyed 
Crust. i. p. 319. 
1889. Gammarus fontanus, Moniez, Rey. Biol. du Nord de la France, 
i. p. 48. 
1890. Miphargus fontanus, WrzeSniowski, Zeitschrift fiir wissenschaft- 
liche Zoologie, L. 4, p. 674. 
1893. Niphargus puteanus, Della Valle, Gammarini del Golfo di Napoli, 
p. 704 (tn part). 
1896. Gammarus puteanus, Hamann, Europaische Hohlenfauna, p. 254 
(tn part). 
1896. Niphargus fontanus, Walker & Hornell, Jour. Mar. Zool. & Micros. 
vol. ii. p. 54. 
Bate and Westwood describe this species as follows :— 
“Moderately robust. Coxe of the first four pairs of legs 
LINN. JOURN.—ZOOLOGY, VOL. XXVIII. iLL 
