456 ONISCIDA. 
TSOPODA. ONISCID 4. 
NORMALIA. 















PHILOUGRIA RIPARIA. 
Specific character. Hlliptical, smooth and glossy. Inner antennz very 
minute and inconspicuous. Outer antenne nine-jointed. Terminal segment 
of the pleon deeply emarginate on each side, truncate, triangular, with the 
extremity deeply emarginate. 
Length, three-twentieths of an inch. 
Ttea riparia. Kocu, in Cont. Panz. Ins. Deutsch]. 162, 17; and 
Deutschl. Crust. 22, 17. 
Philougria riparia. Kinauan, Nat. Hist. Rev. vol. v. 1858, pp. 197, 198, 
pl. 28, fig. 1. 
Ttea levis (2). ZAppAcH, Syn. Crust. Pruss. p. 16. 
Philougria eeler. Kinanan, Nat. Hist. Rev. vol. iv. 1857, p. 281, 
pl. 22, figs. 1-4. 
Tue colour of this small species is uniformly claret- 
brown, appearing under a lens to be beautifully marbled 
with white. It is distinguished by its elliptical outline, 
aud by the terminal segment of the tail being deeply 
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