GUDE : LIST OF HELICOID LAND SHELLS. 



Most of the known Helicoids, as might be expected, belong to the 

 Palaearctic Fauna, the Zonitidap being represented by nine species, 

 the genus Eulofa, more characteristic of the Eastern Fauna, producing 

 eight species. 



Family Zonitidae. 

 Sub-family Zonitinae. 

 Genus Vitrina, Drap. 



pellucida, Miill. Baikal ; 



Genus Punctum, Morse. 



pygmaeum, Drap. Baikal ; 

 Amur. 

 Group Haplogona, Pils. 



Tomsk ; Jenissei; Amur ; Genus Pyramidula, Fitz. 



Kamschatka. 

 sibirica. West. Tomsk; Jenissei. 



= rugulosa, West, 

 exilis, Morel. Kamschatka. 

 Genus Vitrea, Fitz. 



hammonis, Strom. Tomsk ; 



Jenissei ; Amur, 

 petronella, Charp. E. Siberia, 

 pura, Aid. Jenissei ; Baikal. 

 Genus Euconulus, Reinh. 



fulvus, Drap. Baikal ; Jenissei ; 



Section Gonyodiscus, Fitz. 

 ruderata, Stud. Jenissei ; 

 W. and E. Siberia. 

 V. angulosa, Mouss. Tomsk ; 

 Irkutsch ; Amur ; 

 Kamschatka. 

 V. opulenSjWest. Kamschatka. 

 pauper, Gould. Kamschatka. 

 flocculus, Morel. Kamschatka. 

 Family Helieidae. 

 Group Belogona, v. Iher. 



Irkutsch; Kurga; Amur ; Belogona Euadenla, Pils. 



Kamschatka. 



pupula, Gould. Kamschatka. 

 Sub-family Ariophantinae, 

 Genus Zonitoides, Lehmann. 



nitidus, Miill. Tomsk; Jenissei. 

 Family Endodontidae. 

 Group Polyplaeognatha. 



Genus Eulota, Hartm. 

 Section Eulota, s.s. 



fruticum. Mull. 'I'omsk ; 

 lenissei ; Altai. 

 V. asiatica, Dyb. Amur. 

 V. europaea, Dyb. W. Siberia, 

 ravida, Bens. Amur, 



