. Distribution of mammals in Colorado. Mammals. 1972 ARMSTRONG: COLORADAN MAMMALS 43. Fig. 10. Distribution of Sorex cinereus cinereus in Colorado. For explanation of symbols, see p. 9. their ranges in Colorado, the former is more abundant on the Eastern Slope, in my experi- ence, and vagrans is commoner west of the Continental Divide. My observations are sup- ported by the fact that specimens of cinereus outnumbered those of vagrans by a ratio of three to one in samples from transects made in the vicinity of Canon City by B. H. Banta and students from Colorado College. Sorex cinereus is unkno
. Distribution of mammals in Colorado. Mammals. 1972 ARMSTRONG: COLORADAN MAMMALS 43. Fig. 10. Distribution of Sorex cinereus cinereus in Colorado. For explanation of symbols, see p. 9. their ranges in Colorado, the former is more abundant on the Eastern Slope, in my experi- ence, and vagrans is commoner west of the Continental Divide. My observations are sup- ported by the fact that specimens of cinereus outnumbered those of vagrans by a ratio of three to one in samples from transects made in the vicinity of Canon City by B. H. Banta and students from Colorado College. Sorex cinereus is unknown in southwestern Colorado south of the Uncompahgre Plateau and west of the San Juan Mountains. Sorex cinereus cinereus Kerr Sorex arcticus cinereus Kerr, The animal king- dom. . , p. 206, 1792; type locality, Fort Severn, Ontario. Sorex cinereus cinereus, Jackson, Jour. Mamm., 6:56, 9 February 1925. Distribution in Colorado.âMesic habitats in and near the mountains and high plateaus of central and western parts of state (Fig. 10). Comparison.âFrom S. c. haydeni, the sub- species of the northern Great Plains, S. c. cinereus differs in darker color and larger ex- ternal and cranial size (see Jackson, 1928:51). Measurements.âSee table 1 for external and cranial measurements. Remarks.âComparison of Colorado-taken specimens of similar age suggests that there is no appreciable geographic variation within the state. Marked differences in color occur TABLE 1 External and cranial measurements of three species of Sorex. "&% J 2 j2 all O^ to VJUk â¢a-0 Oil £-3 I'S â H * â ££ e ||| j is KU 113599, 9 KU 113600, 2 KU 120927, 2 KU 59633, $ KU 59637, S KU 59634, 9 KU 59639, $ KU 59640, $ FLC (uncat.), 3 CSU 12738, 9 CU (uncat), ? Sorex cinereus cinereus, Chaffee and Lake counties 90 44 12 5 90 37 12 6 2 1/2 mi. N, 2 1/2 mi. E Crestone, 8500 ft., Saguache County 97 42 11 5 Sorex palustris navigator, Grand Mesa 161
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