Number 5. December 15, 1914. 



OCCASIONAL PAPERS OF THE MUSEUM OF 

 ZOOLOGY 



UNIVERSITY OF MICHIGAN 



Ann Arbor, Michigan. Pubushed by the University, 



RESULTS OF THE MERSHON EXPEDITION TO THE 

 CHARITY ISLANDS, LAKE HURON. 



THE FORMICIDAE OF CHARITY ISLAND. 

 By Frederick M. Gaige. 



The collection upon which this paper is based was made 

 on Charity Island during September, 1910, while the writer 

 was a member of the Mershon Expedition. As has been stated 

 in previous papers, ''■ this expedition was sent out from the 

 Museum of Zoology and was supported by Hon. W. B. Mer- 

 shon of Saginaw, Michigan. The work was done under the 

 general direction of Dr. Alexander G. Ruthven, Director of 

 the Museum. 



The Charity Island group is composed of three small islands 

 and a rocky islet near the mouth of Saginaw Bay, several 

 miles from the mainland. It lies at about 44° north latitude. 

 The collection was made only on the largest of the islands, 

 which has an area of about 640 acres. There is a lighthouse 



*See note page 29. 



Scientific Papers of the University of Michigan No. 5. 



