Number 79 March i, 1920 



OCCASIONAL PAPERS OF THE MUSEUM OF 

 ZOOLOGY 



UNIVERSITY OF MICHIGAN 



Ann Arbor, Michigan Published by the University 



NOTE ON OREOHBLIX IDAHOBNSIS BAILBYI 

 BARTSCH 



By Mina Winseow 



A large series of this Oreohelix was recently noticed in the 

 collection of the Museum of Zoology, and the attention of the 

 writer directed to it by Dr. H. A. Pilsbry. The shells were 

 submitted to Dr. Paul Bartsch of the U. S. National Museum, 

 who confirmed my identification and urged the publication of 

 measurements of the series since it exhibits considerable varia- 

 tion in size and proportions. 



The subspecies v/as described* from three specimens taken 

 in the Seven Devils Mountains, Idaho. The present lot was 

 collected in 1900 by I. C. Russell in the Snake River Canyon, 

 Idaho, eight miles below the mouth of the Salmon River, on 

 limestone. This locality is in the Seven Devils Mountains and 



* No. 2155. — Proc. U. S. Nat Mus., Vol. 51, pp. 331-333- with plate 31. 

 November 24, 191 6. 



