Xumi:hk42- July I, 1917, 



OCCASIONAL PAPERS OF THE MUSEUM OF 

 ZOOLOGY 



UNIVERSITY OF MICHIGAN 



Ann Ardor, IMiciiigan. Published by the University. 



AN ANNOTATED LIST OF SHELLS FROM 

 NORTHERN MICHIGAN. 



By AIiXA L. Win SLOW. 



The shells listed below were collected by members of four 

 expeditions from the Museum of Zoology and the ^Michigan 

 Geological and Biological Survey. In 19 12 Mr. N. A. Wood 

 made a small collection at Whitefish Point, ChippcAva County, 

 v>hile engaged primarily in work on birds and mammals, also 

 a larger collection in the same region in 1914; a third incidental 

 collection was made by him in Alger County during the sum- 

 mer of 1916. In 191 5 a more extensive collection was made 

 near Floodwood in Schoolcraft County by persons able to 

 devote more time to the work, w^ith the result that 41 of the 65 

 species and varieties listed were secured in that region. 



The species discovered are those that might have been ex- 

 pected in the region, judging by the results of other collectors 

 to which reference is made in the short bibliography at the 

 end of this paper (Walker, 1894. 1906, 1908, 1915 ). 



