. Distribution of mammals in Colorado. Mammals. 282 MONOGRAPH MUSEUM OF NATURAL HISTORY NO. 3 females from Nebraska are: (594-686), 599, 560; (185-217), 203, 185; (68- 76), 64, 62; (25-27), —, — (Jones, 1964: 280). Selected cranial measurements (op. ) of two males and two females from Cherry County, Nebraska, are: condylobasal length, , , , ; zygomatic breadth, , , , ; postorbital con- striction, , , , ; mastoid breadth, , , , ; length of maxil- lary toothrow, , , , Remarks.—I have n
. Distribution of mammals in Colorado. Mammals. 282 MONOGRAPH MUSEUM OF NATURAL HISTORY NO. 3 females from Nebraska are: (594-686), 599, 560; (185-217), 203, 185; (68- 76), 64, 62; (25-27), —, — (Jones, 1964: 280). Selected cranial measurements (op. ) of two males and two females from Cherry County, Nebraska, are: condylobasal length, , , , ; zygomatic breadth, , , , ; postorbital con- striction, , , , ; mastoid breadth, , , , ; length of maxil- lary toothrow, , , , Remarks.—I have not examined specimens of M. vison from the plains of eastern Colo- rado; apparendy the species has never been as abundant there as in the mountains of cen- tral and western parts of the state (see Cary, 1911:183). Nonetheless, mink do occur in eastern Colorado at some localities; for ex- ample, Mr. Gerry Siever, an employee of the state fish-rearing unit at Wray, indicated to me that mink are an important menace to fry and fingerlings there (personal communica- tion, 6 June 1968). Jones (1964:282) re- ported specimens from the Republican River drainage in Dundy County, Nebraska, but had no specimens from the Platte River west of Lincoln County. Stains and Packard (1955) documented the occurrence of mink in western Kansas. Records of occurrence.—Specimens examined, none. Additional records: WELD COUNTY: 3 mi. N Pawnee Buttes (Hall and Kelson, 1959:918). YUMA COUNTY: near Wray (see remarks above). Gulo gulo Wolverine Wolverines are boreal mammals, generally distributed in northern parts of the Holarctic Region, and occur southward along major mountain ranges. Today, the wolverine is rare in Colorado, or possibly extirpated from the state. Its numbers in the state apparently never have been great, although prior to about 1890 the species was generally distrib- uted in densely forested parts of the higher mountains. Early accounts were compiled by Cary (1911:191-192) and by
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