of us
(Jones) and Robert R. Patterson visited the area briefly and obtained a
small collection of mammals. Subsequently, field parties from the Museum
of Natural History collected mammals in the county in the periods 14-30
June 1961, 23 March-11 April 1963, 5-7 July 1965, and 13 May-11 June
1968. Incidental collection also occurred in the extreme western part of
the county in the period 29 June-24 July 1970 when a group was working
primarily in the Long Pine Hills of adjacent Carter County, Montana.

There are few published references to mammals in Harding County. Visher
(1914), in an early biological survey of the area, listed 40 species of
mammals, but his accounts are mainly of historic value. Subsequently,
publications by Bailey (1915), Young (1944), Goldman (1944), Over and
Churchill (1945), Jones and Genoways (1967), and Henderson _et al._
(1969) have recorded mammals from the county.

ACCOUNTS OF SPECIES

Fifty-three species of mammals known from Harding County, South Dakota,
are treated in the accounts that follow. Appended is a brief discussion
of 10 additional species that may be found there. In most accounts,
specimens that have been examined (a total of 644) are listed in
telegraphic style preceding remarks; localities are arranged from north
to south in such lists. Unless otherwise noted, specimens are housed in
the Museum of Natural History. All measurements are in millimeters
(those of embryos are crown-rump lengths) and weights are given in
grams.

Order Chiroptera

~Myotis evotis evotis~ (H. Allen, 1864)

Long-eared Myotis

_Specimens examined_ (20).--NW 1/4 sec. 15, R. 5 E, T. 22 N, 2; 5 mi. N,
2 mi. W Camp Crook, 1; 10 mi. S, 5 mi. W Reva, 16; 7 mi. S, 4-1/2 mi. E
Harding, 1.

The long-eared myotis is not uncommon in and around wooded buttes. The
species may be mostly limited to these areas; an individual of unknown
sex found dead in a small stream southeast of Harding (several miles
south of the East Short Pine Hills) is the only specimen not taken in
such a situation. North of Camp Crook, on the eastern edge of the Long
Pine Hills, several _M. evotis_ used an abandoned shed as a night roost
in the summer of 1970; one was captured in a bat trap set at one of the
entrances to the shed.

Females obtained on May 29 and June 17 and 19 carried single embryos
that measured 3, 14, and 15, respectively. A male young of the year
taken on August 6 was nearly of adult size. Testes of two May-t