Microtus montanus fusus Hall.—Ten Montane Voles (60060-60068, 70145) represent localities 3, 6, 7, and 15.
Ondatra zibethicus osoyoosensis (Lord).—Muskrats were seen daily from June 17 to June 23 in a lake at locality 13. No specimen was obtained.
Zapus princeps princeps J. A. Allen.—Nineteen Western Jumping Mice (60109-60126, 60137) were trapped at localities 6, 10, 12, 14, and 15.
Erethizon dorsatum epixanthum Brandt.—A Porcupine skull was seen in the nest of a wood rat by John M. Legler at locality 3 on July 2. On June 20 a porcupine was seen at locality 12. No specimen was obtained.
Mustela frenata nevadensis Hall.—Seven Long-tailed Weasels (60138-60143, 70152) were taken at localities 1, 4, 7, 8, 13, and 14. Four are males and three are females. Some of these were attracted by "squeaking" noises and then shot.
Taxidea taxus taxus (Schreber).—One adult male Badger (60144) was found dead; the skull and baculum were saved. The subspecific identification is on geographic grounds, and is tentative. In this area T. t. taxus and T. t. fippsi may intergrade.
Mephitis mephitis estor Merriam.—One Striped Skunk (60145) of unknown sex was found dead in the cellar of a cabin at locality 10.
Odocoileus hemionus hemionus (Rafinesque).—Mule Deer were observed at locality 15; no specimen was obtained.
DISCUSSION
The species here reported from the Grand Mesa may be placed according to their geographic ranges and their restriction to certain habitats in two groups: