283 



Fig. 8. Armadilloniscus ellipticus, uropod of male, ventral view. 

 Fig. 9. " " first pleopod and penis of male. 



Fig. 10. " second pleopod of male. 



Fig. 11. Armadilloniscus dalmatinus, second maxilla of male. 



Reiaarks on the family Scyphacidae. — Budde-Lund considered 

 the Scyphacidae as close to the Trichoniscidae, which view has 

 been followed by subsequent authors. The resemblance of 

 habitus is very striking in some cases. 



Verhoeff (1917, 1928) has grouped the land isopod families in 

 four tribes or superfamilies on the basis, chiefly, of the respira- 

 tory organs. Through the kindness of the late Dr. Charles 

 Chilton I have had specimens of Actoecia and Scyphax for 

 examination in comparison with Scyphacella and Armadillon- 

 iscus. The Scyphacidae, although they lack pseudotracheae 

 (Weisskorper), possess a water conductor (Wasserbahn of 

 Verhoeff) between the endopods of the uropods and hence fall 

 in the Pleurotracheata which includes, among other families, 

 the Oniscidae and Porcellionidae. 



