14 



LAIsD AND FRESH WATER MOLLUSKS 



TABLE III. DISTRIBUTION OF NORTHEAST ASIATIC LAND 

 AND FRESH WATER SHELLS. 



Name of Species. 



M 



Zoogenites harpa Say 



Vallonia adela West 



Vallonia pulchella Miiller 



Vallonia costata Miiller 



Helicigona subpersonata Midd 



Hygromiahispida L 



Hygromia rufescens Penn 



Hygromia stuxbergi West 



Eulota arcasiana Crosse 



Eulota maackii Gerstf. 



Eulota middendorfifii Gerstf. 



Eulota ravida Benson 



Eulota schrenckii Midd 



Eulota selskii Gerstf. 



Eulota weyrichii Schrenck 



Pupilla muscorum L | o 



Vertigo alpestris Alder ' O 



Vertigo arctica Wall I o 



Vertigo krauseana Reinh 



Vert igo borealis Morel 



Cochlicopa lubrica Miiller 



Vitrina exilis Morel 



Vitrina pellucida Miiller 



Vitrea radiatula Alder 



Euconulus trochiformis Montagu 



Zonitoides arboreus Say 



Limax agrestis L 



Limax hyperboreus West 



Arion hortensis Fer 



Arion ater L 



Incilaria bilineata Benson 



Pyramidula ruderata Studer 



Punctum conspectum Bland 



Punctuni ? floccula Morel 



Sphyradium edentulum Drap 



Succinea putris L 



Succinea chrysis West 



Lymnsea stagnalis L 



Lymnaea peregra Miiller 



Lymnsea auricularia L 



Lymn;sa ovata Drap 



Lymnsea kamchatica Midd 



Lymnaea palustris Miiller j o 



Lymnsa truncatula Miiller 



Planorbis limophilus West 



Planorbis nitidus Miiller 



Planorbis contortus Miiller 



Planorbis carinatus Miiller 



Planorbis borealis (Lov^n) West 



Planorbis kamchaticus West 



Planorbis moUendorffii Dyb 



Planorbis albus Miiller i o 



Physa fontinalis L ' o 



^ I 5 



o 

 o 



o o 



o o 

 o 



o o 



o o 



o o 



o o 

 o o 

 o o 

 o o 



o o 



