GAMMARUS CAMPYLOPS, 
375 
AMP HIP OD A. 
NATAT0K1A. 
GA MM A RIDES. 
GAMMARUS CAMPYLOPS. 
Specific character. Third segment of the pleon having the inf ero -posterior 
angle produced to a point. Posterior pair of pleopoda having the inner 
ramus nearly half the length of the outer. Eyes sigmoid or reniform. 
Length \ inch. 
Gammarus camylops. 
Gammarus campylops. 
Gammarus camp tol opts. 
Gammarus camphylops. 
Gammarus locusla. 
Leach, Edin. Encyc. vii. p. 403. 
Leach, Linn. Trans, xi. p. 360. Suppl. Enc. 
Brit. i. p. 425. Desmarest, Consid. sur les 
Crust, p. 267. Milne Edwards, Hist, des 
Crust, iii. p. 48. Thompson, Ann. Nat. Hist, 
t. xx. p. 242. 
Samoeelle, Ent. U. Comp. p. 104. White, 
Hist. Brit. Crust, p. 183. Cat. Brit. Crust, 
p. 53. Cat. Crust. Brit. Mus. 1847, p. 88. 
Cat. Brit. Crust. Brit. Mus. 1849. Gosse, 
Mar. Zool. i. p. 147. Spence Bate, Cat. 
Amph. Brit. Mus. p. 209, pi. xxxvii. fig. 3. 
Milne Edwards, Ann. Sc. Nat. xx. p. 367. 
Liljeborg, Ofvers. af Kongl. Yet. Akad. For- 
handl. 1853, p. 448. 
This species differs from G. locust a in the following 
characters. The eyes are linear, reniform, or occasionally 
bent in the form of the letter S. The antennae are 
short. The superior pair in the type specimen do not 
reach beyond the third segment of the body, and the 
