. Mammals of the Mexican boundary of the United States : a descriptive catalogue of the species of mammals occurring in that region; with a general summary of the natural history, and a list of trees . Mammals; Mammals; Trees; Trees; Natural history; Natural history. 340 BULLETIN 56, UNITED STATES NATIONAL MUSEUM. Seasonal changes.—There are two seasonal pelages, winter and summer, the latter worn only for a few weeks. The winter overhair falls out at the beginning of hot weather, leaving the animal clad in its winter underfur, which soon becomes brittle and worn, exposing the dark color at ba
. Mammals of the Mexican boundary of the United States : a descriptive catalogue of the species of mammals occurring in that region; with a general summary of the natural history, and a list of trees . Mammals; Mammals; Trees; Trees; Natural history; Natural history. 340 BULLETIN 56, UNITED STATES NATIONAL MUSEUM. Seasonal changes.—There are two seasonal pelages, winter and summer, the latter worn only for a few weeks. The winter overhair falls out at the beginning of hot weather, leaving the animal clad in its winter underfur, which soon becomes brittle and worn, exposing the dark color at base, when the animal looks ragged and' patchy, often appearing to be blackish when seen at a distance. The summer. Pig. 56.—Cynomys hiitovicianus aeizonensis. (Cat. No. 36362, ) a, Dhrsai, view; 6, Ventral view; c, Latebal view. pelage is first acquired on the forefeet and head, extends slowly back- ward over the shoulders,, but rapidly over the ventral surface and inner sides of the hind limbs, then to their outer surface, and lastly to the rump and tail. The underfur disappears at the advent of the coarse summer coat,, in which it is wanting. The change from winter to summer dress is a slow one, that from summer to winter much. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Mearns, Edgar Alexander, 1856-1916. Washington : Govt. Print. Off.
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Keywords: ., bookcentury1900, bookdecade1900, books, booksubjectnaturalhistory
