A young individual taken in a trap July 3 was found surrounded by a swarm of mosquitoes, which seemed to annoy him considerably, for he shook his skin frequently to dislodge them. One mosquito settled on a lower eyelid as we watched, and others kept alighting on his nose. When he raised his quills on our approach many mosquitoes attacked the skin exposed on the back.
Marmota monax canadensis. Canada Woodchuck.
Hemlock forest, 5.
Shrub stage, 9.
A few occur in the Cisco Lake Region, where they are most common in the shrubby clearings. Several adults fed commonly on the refuse from the camp. The stomach of a captured individual contained a considerable quantity of cooked corn, spaghetti, and boiled ham. Three woodchucks were noted at different times in hemlock forest along the lake shores.
A half-grown juvenile was seen to swim the Ontonagon River near its entrance to Cisco Lake. This was on July 10, near noon, with bright sunshine. The river here is at least 75 yards in width, but has no perceptible current.
Juveniles taken in traps were observed to extrude scent glands from the anus when approached. These glands are three in number, one on each side of the anus and one beneath. They are small, whitish, and cup-shaped. Normally they lie just inside the anus, but on excitement they are everted and the fold of skin forming the edge of the anus is rolled outward so that the glands lie outside. We detected a faint musky odor which might have come from these glands.
In the Little Girl's Point district several inhabited a woodpile in hemlock forest at the edge of a wide road. None were found near Gogebic Lake.
Eutamias borealis neglectus. Lake Superior Chipmunk.
Tall-sedge, 1.
Grassy-meadow, 3.
Black spruce—tamarack bog, 1.
Hemlock forest, 1.
Wet hardwood forest, 1.
Shrub stage, 20.
Paper birch—aspen stage, 2.
Common in shrubby clearings and burns in the Cisco Lake and Little Girl's Point regions. A few were taken in tall sedges and grass not far from shrubs; one was taken in a small black spruce bog, about five yards from the surrounding wet hardwood forest; one was taken in hemlock forest near the lake shore; and one was seen in wet hardwood forest near the lake shore. Not seen near Gogebic Lake.