Sinossi
This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1910 Excerpt: ...mexicana; nasals and premaxillae reaching farther posteriorly beyond anterior plane of orbits; frontals broader posteriorly. Closely resembling that of N. m. pinetorum, but slightly smaller; nasals averaging broader posteriorly and reaching farther beyond anterior plane of orbits; frontals broader posteriorly; third lower molar in many (but not all) skulls with two outer reentrant angles, the anterior very small and disappearing with advancing age. Measurements.--Average of 3 adult topotypes: Total length, 331; tad vertebrae, 150; hind foot, 33. Average of 9 adults from Loveland, Colo.: 334, 144, 33.5. Skull (an adult topotype): Basilar length, 35.8; zygomatic breadth, 22.2; interorbital breadth, 5.2; length of nasals, 17.3; length of incisive foramina, 9.5; length of palatal bridge, 7.7; alveolar length of upper molar series, 8.9. Remarks.--This is a variable form approaching mexicana in southern New Mexico and grading into pinetorum in western New Mexico. Specimens from Copperton, Mount Taylor, and Grant, N. Мех., are dichromatic, some being of the usual color, while others are much darker, with a pinkish buffy band across the chest, and the belly more or less distinctly washed with this color. A young adult individual from Grant is dark slaty above with a pinkish buffy wash overspreading entire underparts. The additional outer reentrant angle often present in the third lower molar occurs irregularly in nearly all of the members of the mexicana group. Externally fallax may be known from alhigula, which often occurs at the same localities, by the plumbeous basal color of the fur on the throat and breast. Specimens examined.--Total number 278, from localities as follows: Colorado: Arboles, 2; Arkins, 2; Ashbaugh Ranch, Montezuma County, 1;...
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