Between August 8 and September 4, 1956, and on July 17, 1960, I
collected 216 mammals from Mesa Verde National Park. Between November 3,
and 12, 1957, J.R. Alcorn collected 275 mammals from the Mesa. The total
of specimens examined is 735.

Written reports by C.W. Quaintance, H.P. Pratt, and R. Harlow have been
of considerable use. A typescript report of 13 pages by Wildlife
Technician H.P. Pratt for the period from September 9 to October 15,
1935, and monthly reports comprising 40 typescript pages and 4 pages
with photographs by C.W. Quaintance for the period from February 18
through July 17, 1935, are on file at offices of Region Four, National
Park Service, 180 New Montgomery Street, San Francisco 5, California.
Chief Ranger Wade has kindly made available the files in his office,
including reports of the Superintendent and reports of the Chief Ranger
in earlier years, and Annual or Biennial Animal Census Reports since
1930. Special reports on prairie dogs, porcupines, and deer are in the
files. These reports, and random reports that were regarded as reliable,
are recorded on card files in both the Chief Ranger's office and Park
Archeologist's office. Most of the information reported here on the
larger mammals was gleaned from the above sources. A study of population
fluctuations in porcupines by Donald A. Spencer and perhaps a study of
movements of porcupines by Spencer, Wade and Fitch are to be published
elsewhere. Other studies still in progress are mentioned in the
following accounts.

ACCOUNTS OF SPECIES

Sorex merriami leucogenys Osgood Merriam's Shrew

_Specimen_: MV 7898/507, head of Navajo Canyon (locality No. 7 in
Fig. 2), October 21, 1954.

This was the third reported specimen of the rare Merriam's shrew from
Colorado (Rodeck and Anderson, 1956:436).

Sorex vagrans obscurus Merriam Wandering Shrew

_Specimens examined._--Total, 8: Morfield Canyon, 7600 ft., 75972,
75973; Upper Well, Prater Canyon, 7575 ft., 69235-69238; 1/4 mi. N
Middle Well, Prater Canyon, 7500 ft., 69239-69240.

The specimens from Prater Canyon were trapped in the grasses and sedges
of the meadow comprising the floor of the canyon. The ground and
vegetation were dry at the time of capture, September 2, 3, and 4, 1956.
_Microtus montanus_ was the only other species taken in the mouse traps
in the sedge and grass. Five of the six specimens from Prater Canyon are
young, having slightly worn teeth;