480 ONISCID A. 
TISOPODA. ONISCIDZ. 
NORMALLA. 

PORCELLIO PICTUS. 
Specific character. Slightly elongated, moderately granulated, upper sur- 
face glossy. Lateral lobes of the cephalon very prominent, curved outwards and 
downwards ; the median lobe small and curvilinear. Terminal segment of 
the pleon triangular, acute at the apex, sulcated above. 
Length, about one-third of an inch. 
Porcellio pictus. Brawnpt and Rarzespurc, Arzne-thiere, ii. pl. 12, 
f. 5. Conspect. Mon. Onise. Bull. Mose. vi. 
p. 176. Mrunz Epwarps, Crust. ili. 166. 
Kryauayn, Dublin Nat. Hist. Rey. vol. 4, 1857, 
p. 278. Jonnsson, Syn. Framst. Sver. Onisc. 
p. 22. BureErspiK, Annot. p. 46. 
(Var.) P. serialis. Koon, Cont. Panz. Heft. 180, n. 18. 
(Var.) P. crassicornis. Kocu, Cont. Panz. Heft. 180, n. 19. 
(Var. ?) P. conspersus. Kocu, Cont. Panz. Heft. 180, n. 17. Zappaon, 
Syn. Crust. Pruss. p. 12 (2). . 
Porcellio melanocephalus. ScuntrzuER, Onisc. Bonn. p. 24 (and Kocu 2). 
FINELY-MARKED specimens of this species are amongst 
the handsomest of the British Isopods. The general 
