30 University of Michigan 



Point this species is the most abundant mammal, but in ttic 

 wet woods at the Gogebic Lake camp it is much less abun- 

 dant, being exceeded in numbers by the bob-tailed shrew. A 

 total of 308 deer-mice w^ere taken during the summer. It was 

 found in a variety of forest habitats, but it is most abundant 

 in the dry upland woods of the Little Girl's Point Region. 

 The individuals taken in the tall sedges at Mud Lake were 

 probably stragglers from the nearby shrubs and forest, for 

 no deer-mice were taken in the extensive sedges of the large 

 beaver meadow studied near Gogebic Lake. Probably most 

 of those taken in the black spruce bogs were stragglers also, 

 though one individual taken in a large black spruce bog was 

 50 yards from the nearest deciduous woods. 



When we arrived in the Cisco Lake Region in late June 

 young and subadults were abundant, many of the female sub- 

 adults, as well as the adults, carrying embryos. Embryos were 

 found throughout the summer up to August 25. Of females 

 containing embryos, five had 4 embryos each, ten females 5 

 embryos each, nine females 6 embry-os each, and one female 8 

 embrj-os. 



Synaptoinys coopcri fatniis. Lemming-vole. 



Tall-sedge, i. Wet hardwood forest, i. 



Black spruce — tamarack bog, 2. Dry hardwood forest, i. 



In the Cisco Lake Region an adult female was taken in dry 

 hardwood forest near Fish-hawk Lake June 28, 1920. It con- 

 tained 6 embryos each 21 mm. long. A juvenile was trapped 

 July 26 on top a log in the tall sedges at Alud Lake. The log 

 bridged over a particularly wet part of the marshy sedges and 

 w^as at the edge of the hardwood forest. Two other juveniles 

 were taken the next day, one in a small black spruce log, and 

 the other in wet hardwood forest at the edge of the same bog. 



