XuMnKK 27,. . ]\IaRCH 2, I916. 



OCCASIONAL PAPERS OF THE MUSEUM OF 

 ZOOLOGY 



UNIVERSITY OF MICHIGAN 



Ann Arbor, Michigan. Published by the University. 



BEES FROM THE NORTHERN PEXIXSULA OF 

 ^riCHIGAX. 



By T. D. a. Cockerell. 



The following report on bees collected by the Shiras Expe- 

 ditions to AMiitefish Point. Chippewa County, ^Michigan, in 

 1913 and 1914. and by the Bryant A\'alker Expedition to 

 Schoolcraft, County, Michigan, in 1915, represent a first con- 

 tribution to the knowledge of the bees of the northern penin- 

 sula of the state. The collection shows strong boreal affinities. 

 It has seemed useful to throw the material into the form of a 

 key, in order to assist subsequent workers in the field in the 

 examination of their specimens. It is to be understood, of 

 course, that all determinations based on the key will be checked 

 by reference to specimens or to the full descriptions, since the 

 key only undertakes to separate the listed species from one 

 another. 



Scientific Papers of the University of Michigan No. 24. 



