450 



ONISCID/E. 



ISOPODA. 



NORM ALIA. 



ONISC1DJ1. 



PHILOSCIA MUSCORUM. 



Specific character. Smooth, shining ; front of the cephalon slightly 

 arched in the middle. Terminal segment of the pleon broadly triangular, 

 apex acuminated, sides straight. Uropoda with the outer division falciform ; 

 the inner lobe scarcely more than half the length of the latter. 



Length, one-fourth to one-third of an inch. 



Oniscus muscorum. 



Philoscia muscorum. 



Oniscus sylvestris. 

 Liyia melanocepliala. 



Zia melanocepkala. 



SCOPOLI, Entom. Carniol. p. 1145. CUTTER, in Journ. 



d'Hist. Nat. i. t. 26, f. 6, 7. COQUEBEET, Illust. 



Iconog. t. 6, f. 12. 

 LATREILLE, Hist. Crust, et Ins. vii. p. 43. Gen. 



Crust, et Ins. i. p. 69. LEACH, Trans. Linn. Soc. 



xi. p. 375, Edin. Enc. vii. p. 406. Suppl. Enc. 



Brit. i. p. 428. SAMOUELLE, Ent. Compend. p. 111. 



KINAHAN, Nat. Hist. Rev. v. 4, 1857, p. 280, 



pi. xx. figs. 1-6; v. 5, 1858, pp. 194, 195, pi. xxi. 



f. 4. WHITE, B. M. Cat. Brit. Crust, p. 72. Pop. 



Hist. Brit. Crust, p. 235. (Not the P. muscorum 



of Lereboullet, which is an Oniscus.) 

 FABRICIUS, Ent. Syst. ii. p. 397. 

 KOCH, in Herrick-Schaffer Contin. of Panzer Ins. 



Deutschl. 162, 18 ; ibid. Deutschl. Crust. 22, 18. 

 Ibid. sub. Ins. D. 180, 1, and D. Crust. 40, 1. 



