NORTH AMERICAN FAUNA [No. 55 



tains, from Bourne in the Baker Kange, and from the northern part 

 of the Blue Mountains just over the line in Washington. Near 

 Bourne, Jewett caught one in an old cabin, and at Wallowa Lake, 

 Cantwell took one in a trap set on an old log in the deep woods. 

 Generally they are found in Canadian Zone forests of spruce, fir, and 

 lodgepole pine. 



General habits. These squirrels are well known to the fur trappers 

 who catch large numbers of them in marten traps set in the woods, 

 and especially in those set on the side of tree trunks above the snow. 

 Some trappers report several hundred flying squirrels taken from a 

 line of marten traps during a winter and consider them to be as 

 numerous and active at night as the spruce squirrels are by day. 



They live in hollow trees where these are present but also make 

 nests of soft bark fibers in the branches and forks of trees in which 

 they sleep during the day and raise their young. 



The young, usually four, are born in late May or early June, and 

 in this cold high zone there would be scant time for more than one 

 litter in a season. 



The food, like that of all flying squirrels, is quite varied, as is 

 shown by the different baits that attract them to traps rolled oats, 

 bread, biscuit, bacon, and the meat used for marten bait. They 

 often gather around old camp sites for the scattered grain and food 

 scraps thrown out and seem to be rather omnivorous in their tastes. 



Cantwell picked up an interesting flying squirrel story near Wal- 

 lowa Lake that has every indication of being authentic. In a log 

 cabin back in the mountains where some old settlers resided, an old- 

 fashioned spinning wheel was long stored in the attic. This wheel 

 was sometimes heard revolving at night when no one was near it 

 and was often found still in motion when examined. The house 

 finally acquired the reputation of being haunted until one brave 

 member of the family stole silently up to the dark room when the 

 whirring of the wheel was heard and with a flashlight saw one of 

 these flying squirrels running on top of the wheel as it spun beneath 

 the animal's skillful tread. 



GLAUCOMYS SABRINUS BULLATUS HOWELL 

 SAWTOOTH MOUNTAIN FLYING SQUIRREL 



Glaucomys lullatus Howell, Biol. Soc. Wash. Proc. 28 ; 113, 1915. 



Type. Collected at Sawtooth (Alturas) Lake, Idaho, by B. H. Dutcher, 

 September 28, 1890. 



General characters. Similar to klamathensis but larger, with much larger 

 audital bullae, brighter brown back, and darker tail. Upper parts washed with 

 bright yellowish brown over plumbeous ; tail dark above and dusky toward tip ; 

 eyering dusky ; cheeks and sides of neck clear ashy gray ; belly soiled whitish ; 

 lower surface of tail dark buff y or dusky ; soles of feet yellowish gray. 



Measurements. Total length, 336 mm; tail 142; foot, 43; ear (dry), 21. 



Distribution and habitat. High mountains of central Idaho north 

 to southeastern British Columbia and west throughout the Blue 

 Mountains of Oregon in both Canadian and Transition Zones (fig. 

 31). It seems to show closer affinity with Mamathmsis in Oregon 

 than with its nearer neighbors bangsi and latipes, in Idaho and 

 British Columbia. 



