60 CAPRELLIDE. 
AMPHIPODA. CAPRELLIDA. 
ABERRANTIA. 

CAPRELLA ACUTIFRONS. 
Specific character. Cephalon 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 ¥ inch, 
Caprella acutifrons. LATREILLE in N. Dict. Hist. Nat. 2nd Edit. 
vi. p. 483 (1816), Desmarust, Consid. sur 
Crust. p. 277. Minne Epwarps, Hist. des 
Crust. ili. p. 108. Wuitsr, Pop. Hist. Brit. 
Crust. p. 216. Cat. Brit. Crust. p. 60. 
Spence Barr, Cat. Amph. Crust. Brit. Mus. 
p. 356, pl. Ivi. fig. 6. Van Brnepen, Re- 
cherches sur la Faune littorale de Belgique, 
p. 145, pl. xvi.?'§ fig. 9-11. 
Cancer (Astacus) atomos ? Pennant, Brit. Zool. iv. pl. xiii. fig. 18, 2nd 
ed, 1812 (very bad). Sruw. Elements, ii. 
Dolie 
Juprella Penantis. Leacu, Edin. Encye. vii. p. 404. Spunce Bare, 
Ann. Nat. Hist. 2 ser. xix. p. 151. 
Caprella Pennantii. Jounston in Ann. Nat. Hist. viii. p. 670. 
R. Q. CoucH in Report Penzance, Nat. Hist. 
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 
