362 



Gammarus carinatus. JOHNSTON, Zool. Journ. iv. 52 (not of Fabricius, 



Ent. Syst. ii. 515, which = Atylus carinatus, 

 Leach). 



Amathia carinata. WHITE. Hist. Brit. Crust, p. 182. SPENCE 



BATE, Rep. Brit. Assoc. 1855, p. 58. Ann. 

 Nat. Hist. 2 ser. xix. p. 143. BRUZELIUS, 

 Skan. Amph. Gamin, p. 50 (not Rathke). 



Dexamine? carino-spinosa. WHITE, Cat. Crust. Brit. Mus. 1847. Cat. 

 Brit. Mus. 1850. Hist. Brit. Crust, p. 178 

 (but not of Turton, Syst. Nat. iii. p. 760, 

 which is Atylus carinatus). 



Amphithoe carino-spinosa. GOSSE, Mar. Zool. i. p. 141. 



Amathia carino-spinosa. SPENCE BATE, Cat. Amph. Brit. Mus. p. 199, 

 pi. xxxv. fig. 11. 



Amphithoe Moggridgei. SPENCE BATE, Ann. Nat. Hist. 2 ser. vii. p. 318, 

 pi. x. fig. 10, 1855. GOSSE, Mar. Zool. i. p. 

 141. 



Gammarus angulosus. RATHKE, Nov. Act. Acad. Leop. xx. p. 72, t. iii. 



fig. 3. LILJEBOEG, Ofvers. af Kongl. Vet. 

 Akad. Forhandl. 1851, p. 23, No. 62 ; 1853, 

 p. 447 ; 1855, p. 124, No. 15. BRUZELIUS, 

 Skand. Amph. Gamm. p. 50. Frey u. Leuck- 

 ardt, Beit. z. Kenntn. wirbellos. Thiere, 

 p. 162 (in Bruzelius, 1. c.). 



THE head is anteriorly produced to a small rostrum. 

 A carina traverses the median line of the back, increasing 

 in height to the penultimate segments of the tail ; the 

 three posterior segments of the body, and the first two 

 of the tail, being produced posteriorly into a sharp 

 tooth. There is also a slight carina separating the 

 dorsal from the lateral regions of the animal in the last- 

 mentioned segments. The fourth and fifth segments of 

 the tail have the carina posteriorly terminating in an 

 obtuse edge, the dorsal margin of each being slightly de- 

 pressed at the centre ; the surface of the skin being rather 

 rough, with a row of minute granules on the posterior 

 margin of each segment. The eyes are reniform. The su- 

 perior antennae are scarcely half the length of the animal. 

 The flagellum is as long as the peduncle, having the 



