PORCELLIO CINGENDUS. 489 
ISOPODA, ONISCID 4. 
NORMALIA, 

PORCELLIO CINGENDUS. 
Specific character. Elongate-ovate, smooth or but slightly scabrous, glossy. 
Lateral lobes of the front margin of the cephalon minute and deflexed ; the 
median one nearly obsolete. Terminal segment of the pleon broadly trian- 
gular, flat above, with the apex acute. 
Length, nearly one-third of an inch. 
Porcellio cingendus. Kinauay, Dublin Nat. Hist. Rev. vol. iv. 1857, 
p. 279, pl. xix. figs. 1, 2, 4, 6, 8, and 9. 
Tur minute development of the lateral and frontal 
lobes of the anterior margin of the head, the narrowness 
of the segments of the tail, and the broadly triangular 
terminal segment of that part of the animal, well dis- 
tinguish this species from most of its congeners ; whilst 
the smooth shining body, and the rounded postero-lateral 
angles of the segments of the body, serve to separate it 
Pp .. eae 
Le Cannan fOr ANA » = VW 
