. A biological survey of Colorado. Natural history Colorado; Mammals Colorado; Trees Colorado. 1911.] MAMMALS. 129 Yuma County, tliis fj^oplior is reported very destructive to orchards planted in sandy soil, as it cuts tlio roots of a great many young trees and frequently kills even those of large size. On the western end of the Arkansas Divide, in northern Weld County, and perhaps elsewhere along the eastern base of the foot- hills, G. lutescens occupies considerable territory adjacent to the range of Tliomomys clusius. Both gophers were taken on the grassy plateau north of the Chimney Cliffs
. A biological survey of Colorado. Natural history Colorado; Mammals Colorado; Trees Colorado. 1911.] MAMMALS. 129 Yuma County, tliis fj^oplior is reported very destructive to orchards planted in sandy soil, as it cuts tlio roots of a great many young trees and frequently kills even those of large size. On the western end of the Arkansas Divide, in northern Weld County, and perhaps elsewhere along the eastern base of the foot- hills, G. lutescens occupies considerable territory adjacent to the range of Tliomomys clusius. Both gophers were taken on the grassy plateau north of the Chimney Cliffs in northwestern Logan County within 2 miles of the Nebraska boundary at 5,100 feet. Geomys is prevalent on the Arkansas Divide as far west as Eureka Hill, wliile Tliomomys is the gopher found south of Seibert. Over a wide area. Fig. 17.—Distribution in Colorado of yellow pocket gopher {Geomys lutescens). on the southeastern plains G. lutescens occurs with Cratogeomys castanops. In the vicinity of Lamar it is abundant in sandy country, while Cratogeomys is largely restricted to hard-soil fiats. Streator found lutescens common in sandy river bottoms at both Pueblo and Limon. There are specimens of G. lutescens from Loveland, Valmont, Sterling, Avalo, Seibert, Pueblo, Limon, Burlington, Hugo, Kit Carson, Twin Buttes, Chivington, and Las Animas. Other localities represented in the Warren collection are Monon (Baca County) and Colorado Springs. A specimen collected at Denver by Mr. W. D. Hollister has been identified by the Biological Survey. 90432°—11 9. 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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