BUFFALO SOCIETY OF NATURAL SCIENCES 24I 



Pyramidula perspectiva Say. Rose Hill (Graham Farm). 

 Helicodiscus lineatus Say. Chippawa, Fort Erie, Rose Hill. 

 Polygyra tridentata Say. West Falls, Ebenezer, Windom, 

 Machias. 



Polygyra fraudulenta Pils. Ebenezer. 



Polygyra albolabris Say. Springville, Machias, Chippawa, 



Foster's Flats, West Falls, Goat Isl. 

 Polygyra albolabris var. dentata Try. West Falls, Eighteen 



Mile ck 



Polygyra exoleta Say. West Falls, Machias, Windom. 

 Polygyra dentifera Binn. Springville. 

 Polygyra palliata Say. Goat Isl., Rose Hill. 

 Polygyra thyroides Say. Rose Hill, Goatish, Foster's Flats, 

 Windom, Springville. 



Polygyra mitchelliana Lea. Goat Isl., Fort Erie. 

 Polygyra hirsuta Say. E. Aurora. 



Polygyra fraterna Say. Goat Isl., South Buffalo betw. Ry. 

 tracks, Windom, Foster's Flats, West Falls. 



Vallonia pulchella Mull. Chippawa, Buffalo; universal. 

 Vallonia excentrica Stk. Lewiston, Lancaster, Chippawa. 

 Vallonia costata Mull. Buffalo (Bennett st.) 

 Vallonia perspectiva Stk. Chippawa. 

 Circinaria concava Say. Rocks below Falls, Niagara, 

 Windom. 



Pupa muscorum Linn. Buffalo (Hertel ave. ), Rose Hill. 

 Vertigo ovata Say. Frenchman's ck. , Cayuga Isl., 



Lime Lake, 

 Vertigo ventricosa var. elatior Stk. Government Woods, 



Ft. Erie. 



Vertigo gouldi Binn. Rose Hill. 

 Cochlicopa lubrica Mull. Chippawa, Machias. 

 Bifidaria contracta Say. Lime Lake, Rose Hill, Lewiston, 

 So. Bfo. bet. Ry. tracks. 



Bifidaria armifera Say. Rose Hill, Lewiston, Fort Erie. 

 Bifidaria pentodon Say. Black ck. , Ont. 

 Bifidaria curvidens Gld. Lime Lake, Concord. 



