. Bulletin - United States National Museum. Science. MAMMALS OF Till: MEXICAN BOUNDARY. 2(55 140; Length oi hind foot, 80; eai from crown, 28. Color gray above, very faintly suffused with yellowish brown on the back. Tail gray above, the hairs very broadly annulated with black and tipped with while; tail below, tricolor, grayish mesially, then broadly banded with black and edged with white. Feet (lio-. II) mixed yellowish brown, gray, and black, the latter predominating on the toes. Ears scantily coated with grayish hair, the color changing to tawny ochra- ceous at base externally. Cheeks gray
. Bulletin - United States National Museum. Science. MAMMALS OF Till: MEXICAN BOUNDARY. 2(55 140; Length oi hind foot, 80; eai from crown, 28. Color gray above, very faintly suffused with yellowish brown on the back. Tail gray above, the hairs very broadly annulated with black and tipped with while; tail below, tricolor, grayish mesially, then broadly banded with black and edged with white. Feet (lio-. II) mixed yellowish brown, gray, and black, the latter predominating on the toes. Ears scantily coated with grayish hair, the color changing to tawny ochra- ceous at base externally. Cheeks gray, mixed with white. Under parts, inner side of limbs, and orbital circle white. Mammae: P. 1,A. |, I. 1=4 pairs. Cranial and denial characters.—The skull (fig. \'l) averages 68 by :'»'.• mm. in its greatest diameters. It is relatively long and high, though somewhat flattened in the frontal region. Nasals convex and prominent anteriorly, giving in- creased height to the rostrum. First upper premoler small. Inci- sive foraman short. Intertery- goid fossa short, but relatively longer than in Sciurus aherti, measuring (from base of ptery- goid) more than three upper true molars taken together. Remarks.—The description of the two recognized subspecies of Sciurus griseus were foreshad- owed by the writings of Dr. J. A. Allen, in the Monographs of Xorth American Rodentia, pub- lished in 1877. where he observes (p. 731): "This species is re- markable for the constancy of its coloration. Among some thirty specimens before me only two depart much from the normal phase, as above described. One is Xo. 2463, from near San Francisco, which is faintly washed above with pale reddish brown. The other is No. 3633, from Fort Tejon," etc. Both of these specimens are -till in the U. S. National Museum collection. The first (No. -2Mv.\) is a typical specimen of Mr. Bryant's Sciurus griseus iii<s:' and the second (No. :)i\:\:)) is a Proceedings f the California Academy of Sciences
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Keywords: ., bookauthorun, bookcentury1800, bookdecade1870, booksubjectscience
