60 



CAPRELLUXE. 



AMPHIPODA. 



ABERRANTIA. 



CAPRELLID^E. 



CAPRELLA ACUTIFRONS. 



Specific character. Ceplialon in both sexes anteriorly surmounted by a 

 strong tooth directed forwards. Second pair of gnathopoda having the pro- 

 podos with the palm deeply waved, and defined by an obtuse angle armed 

 with a spine ; limbs very robust. 



Length 5 7 g inch. 



Caprella acutifrons. 



Cancer (Astacus) atomos? 



Caprella Penantis. 

 Caprella Pennantii. 



LATREILLE in N. Diet. d'Hist. Nat. 2nd Edit. 



vi. p. 433 (1816), DESMAREST, Consid. sur 



Crust, p. 277. MILNE EDWARDS, Hist, des 



Crust, iii. p. 108. WHITE, Pop. Hist. Brit. 



Crust, p. 216. Cat. Brit. Crust, p. 60. 



SPENCE BATE, Cat. Amph. Crust. Brit. Mus. 



p. 356, pi. Ivi. fig. 6. VAN BENEDEN, Re- 



cherches sur la Faune littorale de Belgique, 



p. 145, pi. xvi. bis fig. 9-11. 

 PENNANT, Brit. Zool. iv. pi. xiii. fig. 13, 2nd 



ed. 1812 (very bad). STEW. Elements, ii. 



p. 317. 

 LEACH, Edin. Encyc. vii. p. 404. SPENCE BATE, 



Ann. Nat. Hist. 2 ser. xix. p. 151. 

 JOHNSTON in Ann. Nat. Hist. viii. p. 670. 



R. Q. COUCH in Report Penzance, Nat. Kist. 



Soc. 1852, p. 97. 



IN this species the male and female do not appear to 

 differ very materially. The head is surmounted by an 

 anteriorly-directed horizontal tooth, but the rest of the 

 body is smooth. In the male the first segment of the 

 body is scarcely longer than in the female, and the second 

 segment is not much longer than in the female, nor is it 

 longer than the third or fourth segments. The third and 



