. A biological survey of Colorado. Natural history Colorado; Mammals Colorado; Trees Colorado. 104 xoiMii ami:ku\\n na. [No. 33. tinirod with dirty pliiinhoous. Mv. J. W. Frov, of Salida, accounts for this soihiiij; hy the statement that the ])rcvaihn<2; westerly winds carry the smoke of the wSahthi snieUiM- to (he east sidc^ of the vaUey, where much of the time it haui^s in a dense i)all, soihui:; tlie vci^etation and, indu'ectly, the mice w4uch come in contact with it. Kangaroo rats living on the same sand flats were somewhat smoke-soiled, but not to the same extent. P. m . rufn us ap
. A biological survey of Colorado. Natural history Colorado; Mammals Colorado; Trees Colorado. 104 xoiMii ami:ku\\n na. [No. 33. tinirod with dirty pliiinhoous. Mv. J. W. Frov, of Salida, accounts for this soihiiij; hy the statement that the ])rcvaihn<2; westerly winds carry the smoke of the wSahthi snieUiM- to (he east sidc^ of the vaUey, where much of the time it haui^s in a dense i)all, soihui:; tlie vci^etation and, indu'ectly, the mice w4uch come in contact with it. Kangaroo rats living on the same sand flats were somewhat smoke-soiled, but not to the same extent. P. m . rufn us appears to be as strictly nocturnal as the other (UHU'niice. In the little cabin on the edge of the cliffs just above the Spruce Tree Cliff Ruins, at the head of Navajo Canyon, on the Mesa Verde, I. Fig. 11.—Distribution in Colorado of cli ff mice {Pcromyscus truci and P. nasutus). heard these mice squeaking about midnight of June 13. A faint squeak in one end of the cabin ehcited answers from other parts of the building, and the noise w^as kept up for some time. Peromyscus truei (Shufeldt). True Chff ^Vlouse. This large-eared species has a wide distribution in the warmer pans of western Colorado, where in common with many other Ui)per Sonoran mammals its range is practically coextensive with the jumper and piny on belt. GSee fig. 11.) It has been taken also in the juniper countr}^ of the southeastern corner of the State, and Warren has it from Salida and Parkdale, in the upper Arkansas Val- ley. Over much of its range in northwestern Colorado this species. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Cary, Merritt, 1880-1918; United States. Bureau of Biological Survey. Washington : Government Printing Office
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