for Ann Arbor, Dexter,
Manchester, Saline, and Scio Township. The last recorded specimen was
taken by some boys in November, 1921, just south of the Oakland County
line.

February 5, 1912, a trapper took a specimen near Ann Arbor on a night
when the temperature was about 10 deg. F. below zero.

_Scalopus aquaticus machrinus._ Prairie Mole.--The mole was rare or
absent from the county when first settled, but it has gradually
increased and has spread over most of the cultivated lands. It is most
common in sandy or gravelly loams, and is absent from the hard clay
soils. I remember the first appearance of the species on the old Wood
homestead in Lodi Township about 1870. It soon became common.

_Condylura cristata._ Star-nosed Mole.--Although not very rare in this
county, it is seldom seen. We have records for Lodi Township, Ann Arbor,
Webster Township, Ypsilanti, and Chelsea. It prefers low, marshy land
near the water, and much of its food consists of aquatic insects, which
it secures by swimming. It is not as well adapted for burrowing as the
preceding species, so it lives in softer soil.

May 8, 1913, a nest containing six half-grown young was found by Kitt
Cobb in marshy ground beside the Huron River at Portage Lake. The nest
was in a good-sized cavity near the surface of the ground and was lined
with dried grass. This species sometimes comes out on the surface of the
ground, where I have found several individuals in early spring, most of
them dead. February 10, 1907, near Ann Arbor, A. D. Tinker heard one
tunneling in the snow and dug it out.

_Sorex personatus._ Masked Shrew.--In this county the masked shrew is
usually found in sphagnum and tamarack bogs. There are records for a
tamarack bog, three miles south of Ann Arbor, and for Honey Creek, three
miles west of Ann Arbor. I have found it mostly under old logs and in
stumps in rather moist situations.

_Blarina brevicauda talpoides._ Short-tailed Shrew.--Common in swamps,
woodlands, and even in meadows, where it has its own runways and also
uses those of the meadow mouse, on which it largely feeds.

This shrew is diurnal as well as nocturnal, and I have often seen it in
its runways. It is active all winter, and its tunnels may often be seen
in the snow. While trapping in Steere's Swamp, south of Ann Arbor, a
_Synaptomys cooperi_ in a trap was eaten by one of these shrews, which
was later caught in the same trap.

_Cryptotis parva._ Small Shrew.--The first r