Occasional Papers of the Museum of Zoology 25 



The uterus of a female taken July 10, at Fish-hawk Lake, 

 shovred a few small swellings which were identified in the 

 lield as embryos. Unfortunately, the uterus was not preserved. 

 No embryos were found in 26 other females taken between 

 July 15 and September 4. In the latter part of the season 

 fewer immature specimens were taken than earlier in the 

 summer. These facts show that in this region the species 

 breeds in the spring or early summer and does not usually 

 breed again during July and August. 



Myofis lucifugus liiclfugiis. Little Brown Bat. 



Aerial, 15. 



Nine individuals were shot while they were flying over the 

 lakes in the Cisco Lake Region. These were taken between 

 8:00 and 9:00 p. m. from July i to August 2; but on moon- 

 light nights bats, believed to be of this species, were seen 

 flying as late as 10:00 p. m. At the camp near Little Girl's 

 Point one was shot at 7:55 p. m., August 11, as it flew about 

 over the road through the dry hardwood forest. Five others 

 were shot at the Gogebic Lake camp as they flitted through 

 an opening in the wet hardwood 'forest. These were taken 

 between 7:30 and 7:55 p. m., August 23 to September 2; but 

 bats almost certainly of this species appeared regularly in the 

 evenings about 7:10 p. m. 



Lasionycteris noctivagans. Silver-haired Bat. 

 . Aerial, 3. 



Near the Little Girl's Point camp one was shot at 7 :50 p. 

 m., August 9, and two more in the same region about 7 45 p. 

 m., August 17. One was flying along a road through the dry 

 hardwood forest at a height about equal to that of the tree- 

 tops, and the others were taken in a small clearing in the same 

 forest. 



