Baker — The Molluscan Fauna of Western Neio York. 87 



Subgenus Angustula Sterki. 

 *t92. Pupa milium Gould. 



Genus Vertigo Miiller. 

 *t93. Vertigo ovata Say. 

 t94. Vertigo gouldii Binney. 

 t95. Vertigo bollesiana Morse. 



Family Stenogyridae. 



GeDus Ferussacia Kisso. 



Subgenus Cionella Jeffreys. 



96. Ferussacia subcylindrica Linne. 

 Stations 4, 5 and 11. East Rochester (Walton); Cayuga 

 (Banks). Common. 



Family Sucgineidae. 



Genus Succinea Drap. 



*t97. Succinea obliqua Say. Pittsford (Walton). 



*97a. Succinea obliqua totteniana Lea. 



98. Succinea avara Say. 



Station 10. Rochester (Walton); Cayuga (Banks). Com- 

 mon. 



*99. Succinea aurea Lea, 



100. Succinea ovalis Gould. 

 Stations 3, 5, 10, 11, 15 and 17. Charlotte (Walton); 

 Cayuga (Banks). Very common and variable in color, some 

 specimens being of a rich golden hue. The specimens col- 

 lected vary from very narrow to rather wide. The species is 

 found in great numbers along the shores of lakes and rivers, 

 either among the drift or crawling up the stems of the flags 

 which line the shore. The latter case is typical of station 5. 



