PORCELLIO SCABER. 475 
ISOPODA. 
NORMAL IA. 
ONISCID&, 

2 Mi Th 
Way, +¢ @iieesk bs a 

PORCELLIO SCABER. 
Specific character. Hlongate-ovate, rugose. Lateral processes of the 
cephalon very prominent, with the external angle rounded. The middle pro- 
cess triangular. Last joint of the pleon ending in a sharp triangular point, 
deeply sulcated down the middle. 
Length, nearly half an inch. 
Porcellio scaber. LATREILLE, Hist. Nat. Crust. et Ins. vii. p. 45. 
Gen. Cr. et Ins. i. p. 70. Leacu, in Trans. Linn. 
Soc. xi. p. 375. Edinb. Ene. vii. p. 406. Suppl. 
Ene. Brit. 1429. Samovntie, Ent. Comp. p. 112. 
Dersmanest, Cons. Crust. p. 321. Guéirin-Méyzv. 
Icon. R. An. Crust. t. 31, f. 7. Minne Epwarps, 
Crust. iii, p. 167. Cuvimr, Régne An. (Edit. 
Crochard), t. 71, f. 1. Krnanay, Nat. Hist. Rev. 
vol. 4, 1857, p. 277, pl. xxi. figs. 2and8. Kocn, 
in Cont. Panzer Heft. 180, n.6 and 7. Wuuire, B. 
M. Cat. Brit. Crust. p. 72. Pop. Hist. Brit. Crust. 
p. 237, pl. xiii. fig. 2. Branpr and Rarzepure, 
