Sorex personatus personatus. Masked Shrew.
Grassy-meadow, 2.
Black spruce—tamarack bog, 2.
Wet hardwood forest, 3.
Dry hardwood forest, 3.
Shrub stage, 2.
In the Cisco Lake Region in July, one was taken in a small black spruce bog, two in a narrow tongue of grass between tall sedges and sphagnum bordering Mud Lake, three in the wetter parts of the hardwood forest, and three in the upland, well-drained hardwood forest. Near Little Girl's Point in August, two were taken in a growth of shrubs in a burn. Near Gogebic Lake, Ontonagon County, one was taken September 4 in a black spruce bog.
Sorex richardsonii. Richardson Shrew.
Tall-sedge, 15.
Grassy-meadow, 1.
Sphagnum bog, 1.
This species was found only in or near tall sedges growing in moist or marshy situations. In the Cisco Lake Region six were taken near Mud Lake in July. Four of these were taken in tall sedges, one in grass alongside the sedges, and one in sphagnum between the sedges and the lake. August 30 to September 5, eleven were taken in tall sedges in a beaver meadow near Gogebic Lake, Ontonagon County.
An adult female trapped at Mud Lake, July 30, contained five large embryos. There were two pairs of inguinal and one pair of abdominal mammae. Another adult female trapped in the same place, July 22, had two pairs of inguinal mammae, but no abdominal mammae were found.
The latter individual was moulting, patches of new fur having replaced the old on the top of the head midway between the ears and eyes, between the shoulders, and on the rump. The other female mentioned above, taken July 30, had nearly completed her moult.
Only two specimens have been previously recorded from Michigan, one from Alger County and the other from Chippewa County.[2]
Neosorex palustris palustris. Marsh Shrew, Water Shrew.