Catalogue of Recent Mollusca. 
GASTROPODA. 
NEPHROPNEUSTA. 
ZONITIDA, 
Gastrodonta gularis (Say, Helix). x 
Cited by several conchologists; I have seen no specimens 
from Ohio. 
+Gastrodonta collisella Pilsbry. 
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. 
7Gastrodonta lasmodon (Phillips, Helix). x 
Rootstown, Portage Co. (St.). 
Gastrodonta demissa (Binney, Helix.) 
‘““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, Cincinnatt. 
Zonitoides nitidus (Muller, Helix). Pate 
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.). 
7Zonitoides leviusculus (Sterki, Hyalina). x 
Troy! (Shepherd) ; Tuscarawas Co. (St.). 
Zonitoides exiguus (Stimpson, Helix). 
Over the state. 
Zonitoides milium (Morse, Helix). 
Over the state. 
73 
Os 
