Distribution of mammals in Colorado Distribution of mammals in Colorado distributionofma31972arms Year: 1972 72 MONOGRAPH MUSEUM OF NATURAL HISTORY NO. 3 ties, but I am unaware of the reports to which he refers. J. A. Allen (1874:56), working near Montgomery on Mount Lincoln in 1871, wrote: 'A small bat was a few times seen flying about camp soon after sunset, which was probably Lasiurus Noveboracensis [= L. borealis].' More probably the bat Allen saw was Lasionycteris noctivagans. Records of occurrence.—Specimens examined, none. Additional records: WELD COUNTY: Greeley (Warren, 1906:268). A
Distribution of mammals in Colorado Distribution of mammals in Colorado distributionofma31972arms Year: 1972 72 MONOGRAPH MUSEUM OF NATURAL HISTORY NO. 3 ties, but I am unaware of the reports to which he refers. J. A. Allen (1874:56), working near Montgomery on Mount Lincoln in 1871, wrote: 'A small bat was a few times seen flying about camp soon after sunset, which was probably Lasiurus Noveboracensis [= L. borealis].' More probably the bat Allen saw was Lasionycteris noctivagans. Records of occurrence.—Specimens examined, none. Additional records: WELD COUNTY: Greeley (Warren, 1906:268). ARAPAHOE COUNTY: NW of Littleton (Warren, 1912a:7). YUMA COUNTY: Wray (Warren, loc. cit.). OTERO COUNTY: mouth of Apishapa Creek (Say, in James, 1823, 2:65; lo- cality fixed by Glass and Baker, 1968). Lasiurus cinereus Hoaby Rat The hoary bat is widespread in Colorado, and males are not uncommon along the east- ern flank of the mountains and at lower eleva- tions on the Western Slope. Individuals roost in trees. Lasiurus cinereus is migratory, but details of its natural history are unknown. Although specimens seldom have been cap- tured on the plains of eastern Colorado, migra- tory indviduals are to be expected there in riparian woodlands. Jones (1964:96) indi- cated that the hoary bat probably occurs state-wide in Nebraska. A migrant L. cinereus was captured in early spring in Cheyenne County, Kansas (Jones et al., 1967:21), within 10 miles of the Colorado boundary. Lasiurus cinereus is readily distinguished from other Coloradan bats by its large size, the white-tipped hairs of the dorsum, the heavily-furred uropatagium, and the rounded, black-rimmed ears. Lasiurus cinereus cinereus (Palisot de Reauvois) Vespertilio cinereus (misspelled 'linereus') Pali- sot de Beauvois, Catalogue raisonne de museum de Mr. C. W. Peale, Philadelphia, p. 18, 1796; type locality, Philadelphia, Philadelphia Co., Pennsylvania. Lasiurus cinereus, H. Allen, Smithsonian Misc. Coll. 7 (Publ. 165):21,
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