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 the periphery. 



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

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

 1858, p. 115) as a small variety oi 11. solitaria is evidently the 

 young state oi H. Cooperi W. G. Binney. 



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



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

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

 about 4500 feet. The wide distribution of IL arborea 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. arborea is found in Guadeloupe. 



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



3, f. 2. 



Dr. €5ooper also found this in the same locality as H. arborea 

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

 bina on the Red River of the North to Yirorinia. 



&• 



SiCGcinea rusticana Gould Proc. Bost. Soc. N. H. 1816, 



p. 187. 



This species was brought by the U. 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. 



