SYSTEMATIC INDEX. 



PJLGB 

 I. SUB-CLASS GASTROPODA. 



II. Order PBOSOBBANCHIA. 

 II. Sub-Order CTENOBBANCHIA. 



I. Group TAENIOGLOSSA. 



Section A. Holostoma 

 Family Ampullariidse 

 Genus Ampullaria 

 Sub-Genus Pomus 

 Saulea 

 Genus Marisa . 

 ,, Lanistes . 

 Family Valvatidge 

 Genus Valvata . 

 Sub-Genus Lyogyrus 

 Genus Heterocyclus 

 Family Paludinidse 

 Genus Larina . 

 ,, Paludina 

 Sub-Genus Lioplax 

 Tulostoma 

 Campeloma 

 Genus Cleopatra 

 Margarya 

 Neothauma 

 Sub-Family Benedictiinae 

 Genus Benedictia 

 Sub-Family Bythiniinse 

 Genus Bythinia 

 Sub-Genus Fossarulus 



Hydrobioides 

 Genus Stenothyra 

 Family Rissoidse 

 Sub-Family Hydrobiinse 

 Genus Hydrobia 

 Sub-Genus Bythinella 

 Tryonia . 

 Pseudamnicola 

 Genus Amnicola 

 Sub-Genus Pomatopyrgus 

 Genus Cochlippa 

 Fluminicola 

 Gillia . 



1 

 1 

 8 

 13 

 13 

 13 

 15 

 15 

 17 

 17 

 18 

 18 

 18 

 31 

 32 

 32 

 33 

 33 

 33 

 34 

 34 

 34 

 34 

 42 

 42 

 42 

 46 

 46 

 46 

 49 

 55 

 55 

 56 

 57 

 58 

 58 

 59 



Genus Somatogyrus 



Lithoglyphus 

 Sub-Genus Spekia 

 Jullienia 

 Lacunopsis 

 Genus Emmericia 



Pachydrobia 



Hemistomia 



Tricula . 



Baikalia . 



,, Trachybaikalia 

 Sub-Family Skeneinae 

 Genus Skenea . 

 Sub-Family Pomatiopsinse 

 Genus Pomatiopsis 

 Sub-Family Assimineinse 

 Genus Assiminea 

 Sub-Family Eissoininae 

 Genus Rissoina . 

 Sub-Genus Iravadia . 

 Issel ella . 

 Genus Fairbank a 



Folinia 



Rissoa 



Alvania 



Fenella 



Onoba 

 Sub-Genus Ceratia 



Hyala . 

 Genus Amphithalmus 



Cingula . 

 Sub-Genus Putilla 

 Genus Setia 



Nevillia . 



Eatoniella 



Crossea . 



Anabathron 



Scaliola . 



Microstelma , 

 Corena . 



Family Heterophrosynidaa 

 Genus JefFreysia 

 Barleeia . 



PA OB 



59 



59 



61 



61 



61 



61 



62 



62 



62 



62 



63 



63 



63 



63 



63 



64 



64 



73 



73 



97 



98 



99 



100 



100 



105 



113 



119 



121 



121 



123 



124 



126 



127 



129 



129 



129 



130 



130 



132 



132 



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