LAND SNAILS. 



1, Helix Mackenzii ; 2, Succinea putris ; 3, 4, Pupa uva ; 5, Helix aspersa ; 6, H. aspersa, var. scalaris ; 7, H. imdulata ; 8, H. Stuartia ; 

 9, H. aspersa; 10, Vitrina fasciata ; 11, H. citrina ; 12, H. translucida; 13, 17, H. Waltoni ; 14, 15, Bulimus sultanus ; 

 16, Achatina zebra. 

 56 



