. Fig. 76. Distribution of two species of woodrats in Colorado. 1. Neotoma albigula brevicauda. 2. N. a. laplataensis. 3. N. a. warreni. 4. Neotoma lepida sanrafaeli. For explanation of symbols, see p. 9. Comparisons.—From N. a. laplataensis, the subspecies of the San Juan drainage to the south, and from N. a. warreni, the sub- species of southeastern Colorado, N. a. brevi- cauda differs in having a heavier rostrum, square squamosal roots of zygomatic arches, posteriorly broader incisive foramina, and broader upper incisors (after Finley, 1958: 292). Measurements.—External measurements of a ma
. Fig. 76. Distribution of two species of woodrats in Colorado. 1. Neotoma albigula brevicauda. 2. N. a. laplataensis. 3. N. a. warreni. 4. Neotoma lepida sanrafaeli. For explanation of symbols, see p. 9. Comparisons.—From N. a. laplataensis, the subspecies of the San Juan drainage to the south, and from N. a. warreni, the sub- species of southeastern Colorado, N. a. brevi- cauda differs in having a heavier rostrum, square squamosal roots of zygomatic arches, posteriorly broader incisive foramina, and broader upper incisors (after Finley, 1958: 292). Measurements.—External measurements of a male and three females from 1 mi. SW of Gateway, Mesa County, are: 339, 334, 307, 318; 148, 150, 139, 131; 34, 35, 33, 34; 29, 28, 29, 28; weights, 169, 166, 146, 160. Selected cranial measurements are presented in table 21. Records of occurrence.—Specimens examined, 15, distributed as follows: MESA COUNTY: 1 mi. SW Gateway, 4600 ft., 8 (KU). MONTROSE COUNTY: 4 mi. SE Uravan, 1 (UMMZ); Bedrock, 5150 ft., 4 (1 AMNH, 3 WC); 1 mi. NE Naturita, 5900 ft., 1 (KU); Coventry, 6800 ft., 1 (AMNH). Additional records: Slick Rock, 8 mi. N, 3 mi. E Egnar, 5800 ft. (den record, Finley, 1958:293). Neotoma albigula laplataensis F. W. Miller Neotoma albigula laplataensis F. W. Miller, Proc. Colorado Mus. Nat. Hist., 12:2, 22 July 1933; type locality, Bondad, La Plata Co., Colorado. Distribution in Colorado.—At lower eleva- tions in drainage of San Juan River (Fig. 76). Comparisons.—For comparison with other
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