452 



1SOPODA. 

 NORM ALT. 4. 



ONISCID.E. 



ONISCID^E, 



PHILOSCIA COUCHII. 



Specific character. Smooth and glossy. Front of the cephalon nearly 

 straight. Terminal segment of the pleon linear- triangular, with the apex 

 obtusely truncate, armed with bristles, the sides slightly excavated. Outer 

 ramus of the uropoda subulate-falciform ; the inner not more than one-fourth 

 of the length of the former. 



Length, one-fourth of an inch. 



Philoscia Couchii. KINAHAN, Nat. Hist. Rev. vol. v. 1858, p. 195, pi. 23, 



fig. 4. 



THIS species was first described by the late Professor 

 Kinahan, who gave the following characters of it : " Body 

 smooth, elliptical. Head somewhat rounded, nearly 

 straight across the front ; beneath the orbits is a small 

 lobe arising from superior margin of the antennal ring.* 

 Internal antennae inconspicuous; external antennae hairy. 

 Tige (flagellum) long and narrow. Abdomen (tail) nar- 

 rower than the cephalo-thorax (body). Telson (last seg- 

 ment) narrow, linearly triangular ; apex rounded and 



"In the new species the frontal border of the carapace (cephalon) is 

 carried well forward, and passes down to the antennse, the superior antennal 

 ring having its margin produced into a minute lobe beneath the orbit. This 

 species fully proves the judiciousness of the separation of Philoscia from 

 Oniscus." 



