JyERA ALBIFRONS. 



I 'SO POD A. 



NORMAL! A. 



317 



ASELLID^. 



J&RA ALBIFRONS. 



Specific character. Subovate, very depressed, sides of the ceplialon, pereion, 

 and pleon margined. Colour cinereous, with the anterior margin of cephalon 

 whitish. 



Length, about one-sixth of an inch. 



Oniscus albifrons. 

 Jcera albifrons. 



Jcera niraUs 1 



Oniscus marinusl 



MONTAGU, MSS. in Brit. Mus. 



LEACH, Edinb. Encycl. vii. p. 434. Trans. Linn. Soc. 



xi. p. 373. Suppl. Enc. Brit. i. 428. SAMOUELLE, 



Ent. Compend. p. 110. DESMAREST, Cons. p. 316. 



MILNE EDWARDS, Crust, iii. p. 150. W. THOMPSON, 



in Ann. Nat. Hist. xx. p. 245. WHITE, B. M. Cat. 



Brit. Crust, p. 69. Pop. Hist. Brit. Crust, p. 231. 



GOSSE, Man. Mar. Zool. i. fig. 243. 

 KROYER, Gronlands Amfipod. p. 75, pi. 4, fig. 21a k. 



MILNE EDWARDS, 0. C. p. 149. 

 0. FABRICIUS, Fn. Groenl. p. 252, n. 229. 



