354 



GAMMARIM. 



AMPHIPODA. 



NAT A TORI A. 



GAMMARIDES. 



EURYSTHEUS ERYTHROPHTHALMUS. 



Specific character. Second pair of gnathopoda having the palm lunate 

 and armed with three short points. 

 Length \ inch. 



Gam marus erythropkthalmus 

 Eurystheus erythrophtlialmus. 

 Eurystheus triclentatus. 



Liljeborc, in Ofvers. af Kongl. Vet. Akad. 



Forhandl. 1855, p. 124. 

 SpenceBate, Cat. Amph. Brit. Mus. p. 196, 



pi. xxxy. fig. 7. 

 Spence Bate, Rep. Brit. Assoc. 1855, 



p. 58. Ann. Nat. Hist. 2 ser. xix. 



p. 143. White, Pop. Hist. Brit. Crust. 



p. 181. 



In this species the head and body are more than half 

 the entire length of the animal. All the segments are 

 smooth and clean, except the ante- and penultimate 

 segments of the tail, which are laterally furnished with 

 a single hair on each side, springing from a notch or 

 fissure. The eyes are reniform, of a scarlet colour, and 

 situated in the same line with the axis of the superior 

 antennae, instead of their normal place between the 

 superior and inferior pairs. The superior antennae 



