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| Document Type: | Article |
|---|---|
| All Authors / Contributors: | Robert S Hoffmann; Philip L Wright; Fletcher E Newby |
| ISSN: | 0022-2372 |
| OCLC Number: | 481613760 |
| Language Note: | English |
| Notes: | Fig. 1.-Known and probable occurrences of Sorex preblei and of Perognathus parvus. The probable range of P. parvus in Montana is indicated; the record west of the state border is at Lemhi, Lemhi Co., Idaho (Osgood, 1900). Fig. 2.-Selected specimen records of Ochotona princeps and Sciurus niger in Montana, and their probable ranges. The solid line indicates the range border for Ochotona in Hall and Kelson (1959). Question marks indicate areas where Sciurus is suspected to occur. Fig. 3.-Selected specimen records of Lepus americanus in Montana and its probable range. The solid line indicates the range border for L. americanus in Hall and Kelson (1959). The records north and east of the state border are at Cypress Hills, Alberta, Battle Creek, Saskatchewan (Soper, 1964), and Buford, North Dakota. Question marks indicate areas where L. americanus is suspected to occur. Fig. 4.-Selected specimen and sight records of Lepus townsendii in Montana and its probable range. Solid lines "L. T. C." and "L. T. T." indicate range borders of the two races (campanius and townsendii) in Hall and Kelson (1959). Known and probable occurrences of Peromyscus leucopus in Montana, and its probable range; the record north of the state border is at Milk River, Alberta (Anderson, 1946). The solid line "P. L." indicates the range border for P. leucopus in Hall and Kelson (1959). Fig. 5.-Selected specimen records of Eutamias ruficaudus and E. umbrinus in Montana, and their probable ranges. The solid lines indicate the range borders for the two species in Hall and Kelson (1959). Fig. 6.-Selected specimen records of Marmota flaviventris in Montana and its probable range. The solid line indicates the range border for M. flaviventris in Hall and Kelson (1959). The records north of the state border are at Waterton and near Aden, Alberta. The record south of the border is 1 mi. E Acme, Wyoming. Fig. 7.-Known occurrences of Marmota caligata in Montana and its probable range. The arrow indicates the proper position of the "St. Joe National Forest" locality; the area between the lines indicates the range for M. caligata in Hall and Kelson (1959). Fig. 8.-Selected specimen records of Spermophilus richardsonii and S. columbianus in Montana, and their probable ranges. The solid lines indicate the range border for the two species in Hall and Kelson (1959). The record east of the state border is at Buford, North Dakota. Fig. 9.-Selected specimen records of Thomomys talpoides idahoensis and T. t. fuscus in Montana, and their probable ranges. The blank area within the range of T. t. fuscus in the Bitterroot Valley represents the range of T. t. confinis. Fig. 10.-Selected specimen records of Microtus montanus and M. ochrogaster in Montana, and their probable ranges. The solid lines indicate the range borders for the two species in Hall and Kelson (1959). Fig. 11.-Selected specimen records of Microtus longicaudus in Montana and its probable range. The record north of the state border is in the Sweet Grass Hills (Anderson, 1946); the solid line indicates the range border for the species in Hall and Kelson (1959). Fig. 12.-Selected specimen records of Vulpes vulpes in Montana and schematic range extension, based on reports of trappers from 1950 to present. Heavy diagonal lines represent original range in western Montana. The solid line indicates the range border for the species in Hall and Kelson (1959). Irregular vertical lines indicate range expansion in northeast between 1951-52 and 1956-57; light diagonal lines indicate continued expansion in southeast between 1956-57 and 1961-62. Wavy horizontal lines indicate range expansion from both western and eastern Montana towards the center of the state between 1961-62 and 1966-67. Fig. 13.-Selected specimen records of Procyon lotor in Montana and schematic range extension, based on reports of trappers from 1945 to present. Heavy diagonal lines represent original range in southeast Montana, and range extension into western Montana between 1945 and 1951-52. Irregular vertical lines indicate range expansion in the Missouri, Clark's Fork, and Kootenai River drainages between 1951-52 and 1956-57. Wavy horizontal lines indicate continued expansion between 1956-57 and 1966-67; no clear pattern can be found in records from the first and second halves of this decade, and they are combined. Within the range as mapped, raccoons are restricted to suitable riparian habitat. The record north of the state border is at Fox, Cypress Hills, Alberta (Soper, 1964). Fig. 14.-Known occurrences of Spilogale gracilis in Montana and its probable range. The record south of the state border is at Story, Sheridan Co., Wyoming; the solid line indicates the range border for Spilogale in Hall and Kelson (1959). Fig. 15.-Known Occurrences of Lynx canadensis in Montana. Areas Refer to Fur Harvest Estimates (See Text and Table 2). Fig. 16.-Selected literature records of Antilocapra americana in Montana and its probable range. The solid line indicates the range border for Antilocapra in Hall and Kelson (1959). |
| Awards: |
Abstract:
Information on current distribution of 40 species of mammals in Montana is given. Four species, Sorex preblei, Sciurus niger, Perognathus parvus, and Procyon lotor, are reported for the first time from Montana.
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