468 ONISCIDZ. 
ISOPODA. ‘ ONISCIDA. 
NORMALIA. 




; WN) wu RCN 
\ C 

ONISCUS ASELLUS. 
Specific character. Broadly ovate, sub-depressed, shining ; covered with 
smooth granules. Lateral lobes of the cephalon large, inclined backwards, 
Frontal line somewhat emarginate. Terminal segment of the pleon elongate- 
triangular, convex above. Intermediate segments of the pleon terminating 
in acute angles. 
Length, three and a half to eight lines. 
Oniscus asellus. Liyw., Syst. Nat. ii. p. 1061. Du Gunr, Ins. vii. t. 35, 
f. 1. Gurorrroy, Ins. Paris, ii. t. 22, f.1. Larreriie, 
Hist. Nat. Crust. et Ins. vii. p. 42. Lacn, Edin. Enc. 
vii. 406. SamouniiE, Ent. Compend. p.111. Jounsson, 
Syn. Framst. Sver. Onise. p. 15. Wartrn, B. M. Cat. 
Brit. Crust. p. 71. Pop. Hist. Brit. Crust. p. 234. 
Oniscus inurarius. Cuvier, in Journ. d’Hist. Nat. ii. t. 26, f. 11. 
Fasricius, Ent. Syst. Suppl. p. 300. Branpt and 
Rarzes., Arzn. Thiere, ii. t. 12, f. 7. Branpt, in 
Bull. Mose. vi. p. 182. Minne Epwarps, Crust. iii. 
