8 Notice of Land and Freshioater Shells. 



occurs also in Michigan, Indiana, and Ohio. A small variety, 

 sometimes without bands, is found on Strontian Island, Lake 

 Erie. One of Dr. Cooper's specimens has a very unusual 

 arrangement of color, — the entire shell is dark reddish brown, 

 with a single pale band at tlie periphery. 



The shell found by Dr. Ilayden at Bridger's Pass, Nebraska, 

 and referred to by Mr. W. G. Binney (Proc. Acad. K S. Phila. 

 18.68, p. 115) as a small variety of ZT. solitaria is evidently the 

 young state of II. Cooperi W. G. Binney. 



Helix arhorea Say Nich. Enc. iv., pi. 4, f. 4. 



Dr. Cooper met witii this species in damp bottom lands along 

 the lower valley of the Hell Gate Eiver, at an elevation of 

 about 4500 feet. The wide distribution of H. arhorea is 

 remarkable, it is found from Labrador to Texas, from Florida 

 to Nebraska, also on the Rio Chama in New Mexico. It is 

 likewise said by Beau to inhabit the island of Guadeloupe, 

 West Indies. Ferussac, in a letter to Say (1820), the original 

 of which is in the possession of T. Bland, expresses his belief 

 that H. arhorea is found in Guadeloupe. 



Helix striatella Anthony Jl. Bost. Soc. N. H. iii., pi. 



3, f. 2. 



Dr. Cooper also found this in the same locality as IT. arhorea 

 Say. Its range is from Canada East to Kansas, and from Pem- 

 bina on the Red River of the North to Virginia. 



'&' 



Saccinea rusticana Gould Proc. Bost. Soc. N. H. 184G, 



p. 187. 



This species was brought by the IT. S. Exploring Expedition 

 from Oregon. Dr. Cooper collected it on the Rocky Mountains 

 of the Bitter Root Yalley, at elevations from 2500 to 4500 feet. 



