454 ONISCID.E. 



ISOPODA. ONISCIDAf.. 



NORMALIA. 



Genus— PHILOUGRIA. (Kinahan.) 

 ITEA.* (Koch.) 



Generic character. Ovate, sub-depressed. Ceplialon without 

 frontal or lateral lobes. Outer antennae nine or ten-jointed, 

 with the second joint cylindrical; terminal joints subulated. 

 Coxae of first and sixth rings of pleon obsolete. Uropoda 

 entirely exserted ; basal portion trigonate. Outer ramus 

 elongate, pointed, and exserted obliquely. Inner narrow, 

 extending beyond the middle of outer*, pointed. 



This genus was first proposed by Zaddach, and subse- 

 quently adopted by Koch under the name of Ilea — a 

 name employed by Linnasus for a well-known genus of 

 plants. Its description also was not sufficiently precise ; 

 whence Professor Kinahan was at first induced to con- 

 sider the native species as undescribed, both generically 

 and specifically. For both these reasons we consider 

 ourselves warranted in adopting the generic name pro- 

 posed by the lamented Irish naturalist. 



The species are of comparatively small size, with the 

 body smooth and shining. The limbs are armed with 

 strong spines, generally arising from small conical 

 tubercles. The structure of the front part of the head 

 is nearly similar to that of Philoscia, but the lateral 

 ridges around the insertion of the external antennae are 

 somewhat more strongly marked. The outer antennae 

 are entirely exposed at the base. The five basal joints 

 constituting the peduncle are robust, spined, and gra- 



" Nom. Geu. Plantaium. — Linn. 



