_Specimens examined._--Total, 3: [Male], MV 7867/507, 2 mi. N of Headquarters, 7400 ft., September 24, 1935, H.P. Pratt; [Male], 76299, November 9, and [Female], 76300, trapped on November 12, 1957, by J.R. Alcorn at Square Tower House. The gray fox is common on the Mesa. Ursus americanus amblyceps Baird Black Bear From 1929 through 1959 at least 151 observations of bears were recorded. Observations were unrecorded in only five years--1952, 1953, 1954, 1956, and 1958. Most observations were in the 1940's and the peak was in 1944 (18 observations) and 1945 (21 observations). Cubs have been recorded in 10 different years. If dated reports are tabulated by months the following figures are obtained for the 12 months beginning with January: 0, 0, 0, 4, 15, 19, 19, 9, 10, 9, 3, 0. The peak in the summer months and the absence of observations in the winter months are significant. Individual bears probably enter and leave the Park in the course of their normal wanderings; however bears probably hibernate, breed, and bear young within the Park and should not be regarded as merely occasionally wandering into the Park. Procyon lotor pallidus Merriam Raccoon In December, 1959, three raccoons were seen on Prater Grade and later three were seen in Morfield Canyon near the tunnel. I saw a dead raccoon at the side of the highway 3 mi. WSW of Mancos, 6700 feet, on August 8, 1956. This locality is outside of the Park and not on the Mesa, but is mentioned because it indicates that the raccoon probably occurs along the Mancos River, which forms the eastern boundary of the Park. The raccoon is rare in the area. Some local persons were surprised to hear of its presence; other persons told me that raccoons were present, but rare. Bassariscus astutus flavus Rhoads Ringtail _Specimens examined._--Total, 4: MV 7884/507 and 7885/507, trapped in Balcony House and prepared by D. Watson in 1939; MV 7901/507 and 7902/507, without data. The cliff dwellings are favored by ringtails and in some years they are common near occupied dwellings in the area of headquarters. Ringtails have been seen in each major habitat within the Park. Mustela frenata nevadensis Hall Long-tailed Weasel _Specimens examined._--Total, 5: MV 7891/507, [Male], from the "Garden" [= Indian Cornfield]; [Female], MV 7892/507, also from the "Cornfield"; MV 7859/507, "Killed by car on Prater Grade"; [Male], MV 7871/507, in winter pelage, from the North Rim; and [Male], 83464, killed on the road 1/2 mi. NE of the tunnel, Morfield Canyon. C.W. Quaintance in 1935 reported that on January 11, he and Mr. Nelson saw a weasel attack a cottontail, and on March 9, while on the snow plow, Mr. Nelson witnessed another cottontail being killed by a weasel. Weasels in white winter pelage have been recorded in December and January. The brown pelage has been seen as late as November. Mustela vison energumenos (Bangs) Mink