16 THE NAUTILUS. 



Z. limalulns Wd, Cited by De Camp from Traverse City ; also 

 by Miles and Currier. 



Z. minusculus Binn. Gene>'ally distributed through the state. 



Z. milium Mse. Islands in the St. Mary's river. 



Z. hinneyanus Mse. Cited by Binney from Tawas City. I have 

 found it from Traverse City north to Lime Island. It is probably 

 confined to the northern part of the state. 



Z. ferreus Mse. Traverse City and Petoskey. 



Z. exiguus Stimp. Generally distributed through the northern 

 part of the State. 



Z.fidvus Dr. Common everywhere. 



Z. snppres.sus Say. Rare. Cited by Binney but does not appear 

 in any of the catalogues. Dr. M. L. Leach sent me specimens from 

 Fen ton, Genessee County, a few years ago. 



Z. multideniatus Say. Rare. Petoskey is the only locality 

 known to me. Cited also by Currier and De Camp, 



Patula alternata Say. Abundant everywhere. 



P. alternata alba. This form occurred quite commonly with the 

 type at Lime Island and Mackinac Island. Specimens from both 

 localities exhibit all gradations from the typical coloring to the 

 pure albino. 



P. solitarla Say. An inhabitant of the southern portion of the 

 state ; very rare in the southeastern part, where in some localities it 

 is extinct ; more common in the western part. 



P. perspectiva Say. Throughout the State. 



P. striatella Anth. Common everywhere. 



P. striatella alba. Mackinac Island is the only locality Avhere I 

 have found this form. 



[P. asteriscus Mse. This species was cited in my catalogue of 

 1879 by mistake. I am not aware that it has yet been found in 

 the state.] 



P. lineata Say. Common everywhere. 



P. harpa Say. Petoskey is the only locality thus far recorded. 



Punctum pygmceum mimdissimum Lea. Appears to be generally 

 distributed through the state, but is easily overlooked on account of 

 its small size. 



H. clausa Say. Cited by Sagar and Miles but not by any recent 

 collector. 



H. multilincata Say. Common in the southern part of the state. 



H. mnltilineata alba. Associated with type but not common. 



