Catalogue of Recent Mollusca. 



GASTROPODA. 

 NEPHROPNEUSTA. 



ZONITID^E. 



Gastrodonta gularis (Say, Helix). X 



Cited by several conchologists ; I have seen no specimens 



from Ohio. 

 |Gastrodonta collisella Pilsbry. X 



New Philadelphia (St., one specimen of the same form as 

 from eastern Tennessee. 

 Gastrodonta suppressa (Say, Helix). 



Cincinnati; Portage and Tuscarawas Counties (St.) ; probably 

 over most of the state. 

 fGastrodonta lasmodon (Phillips, Helix). X 



Rootstown, Portage Co. (St.). 

 Gastrodonta demissa (Binney, Helix.) X 



"Ohio" (Wetherby). 

 Gastrodonta ligera (Say, Helix). 



Over the state, common. 

 Gastrodonta intertexta (Binney, Helix). 



Over the state, not as common as the preceding. 

 Gastrodonta interna (Say, Helix). 



Columbus, Cincinnati. 

 Zonitoides nitidus (Muller, Helix). Pal. 



Over the state, at wet and damp localities. 

 Zonitoides arboreus (Say, Helix). 



Over the state, common everywhere; colorless, or greenish, 

 specimens are occasionally found. 

 Zonitoides limatulus (Ward, Helix). 



Columbus; Cincinnati; (not e. g. in Tuscarawas Co.). 

 Zonitoides minusculus (Binney, Helix). 



Over the state, common. A reversed (sinistrorse) specimen 

 was found near New Philadelphia (St.). 

 f Zonitoides lseviusculus (Sterki, Hyalina). X 



Troy! (Shepherd); Tuscarawas Co. (St.). 

 Zonitoides exiguus (Stimpson, Helix). 



Over the state. 

 Zonitoides milium (Morse, Helix). 



Over the state. 



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