82 
GAMMARIDiE. 
A MP HIP OB A . L YSIA NA SSIDES. 
NATATORIA. 
Specific character. Inferior antennae as long again as the superior. 
Length of an inch. 
Gammarus Atlanticus. Milne-Edwards, Ann. des Sc. Nat. t. xx. 
Lysianassa Atlantica. Milne-Edwards, Hist, des Crust, t. iii. p. 22. 
Spence Bate, Cat. Amph. Brit. Mus. p. 68, 
pi. x. fig. 10. 
Lysianassa marina. Spence Bate, Ann. Nat. Hist. v. xix. p. 138 (1857). 
White, Pop. Hist. Brit. Crust, p. 168. 
Opis lypica. White, Pop. Hist. Brit. Crust, p. 168. Cat. Crust. 
Brit. Mus. 1850, p. 49 (but not of Kroyer,.Nat. 
Tidsk. iy. 149, Yoy. Scandin. tab. 17, fig. 1.) 
The superior pair of antennae are not longer than the 
head and first two segments. They have the first joint 
of the peduncle very large ; the upper margin is con- 
tinuous with the upper line of the head, and suddenly 
curved down towards the distal extremity — a circumstance 
