THE BRITISH TERRESTRIAL ISOPODA 113 



14. H. danicus, Budde-Lund. Nat. Tidssk., 1870, vii., p. 228. 



Dist. E., S., I. 



Section II. ONISCIN/E. 



Family Oniscidae, Latreille. 



Genus Oniscus, Linn., 1746. 



15. O. asellus, Linn. 1 Fauna Suecica, 1746, p. 500. Dist. E., 



S., W., I., Ch.I. 



(a) albidus, Collinge. Journ. Zool. Res., 1916, i., p. 122. 



Dist. S. 



(b) bicolor, Collinge. Lane, and Ches, Nat., 1917, p. 266. 



Dist. E. 



Genus Philoscia, Latr., 1804. 



16. P. muscorum (Scopoli). Entomol. Carnio., 1763, p. 415. 



Dist. E., S., W., I., Ch.I. 

 (a) obscura, Scopoli. Ibid., p. 415. Dist. E. 

 (6) flava, Bagnall. Trans. Derwent Nat. Hist. Soc., 19 13, 



p. 12. Dist. E. 

 (V) rosea, Bagnall. Ibid., p. 12. Dist. E. 



(d) nacrum, Collinge. Journ. Zool. Res., 1916, i., p. 122. 



Dist. E. 



(e) violaceum, Collinge. Ibid., p. 122. Dist. E., Ch.I. 



(/) standeni, Collinge. Lane, and Ches. Nat., 191 7, p. 266. 

 Dist. E., W. 



17. P. couchii, Kinahan. Nat. Hist. Rev., 1857, iv., p. 195, 



pi. xxiii., f. 4. Dist. E , S., I. 



18. P. patiencei, Bagnall. Ann. Mag. Nat. Hist., 1908, i., 



p. 428, pi. xviii. Dist. E. 



Genus Cylisticus, Schnitzler, 1853. 



19. C. convexus (De Geer). Mem. a l'hist. Insectes, 1778, vii., 



p. 553, pi. xxxv., f. n. Dist. E., S., I. 

 (a) patiencei, Collinge. Journ. Zool. Res., 1916, i., p. 123. 

 Dist. S. 



Genus Porcellio, Latr., 1804. 



20. P. scaber, Latr. Hist. Nat. Crust., 1804, p. 45. Dist. E., 



S., W., I., Ch.I. 



1 Many authors have adopted Cuvier's name of murarius for this species. 

 The 0. fossor, Koch, is an immature example of 0. asellus. 



65 P 



