656 U. S&S. P. R. R. EXP. AND SURVEYS—ZOOLOGY—GENERAL REPORT. 
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CERVUS MACROTIS, Say. 
Mule Deer. 
Cervus macrotis, Say, Narr. of Long’s Exped. If, 1823, 88. 
Hartan, F. Am. 1825, 243. 
Gopman, Am. N. H. II, 204. 
Peae, Phila. Advocate of Science, I, Aug. 1834, 11; figure-—In. Mammalia and Birds U. S. Ex. 
Ex. 1848, fig. of hoof. 
Wacner, Suppl. Schreb. 1V, 1844, 371, (in part only.)—Is. V, 1855, 368. 
Pucneran, Mon. Cerf, Archiv du Mus. VI, 1852, 369. 
GiesEL, Saugt. 1855, 342. 
Cervus (Cariacus) macrotis, Gray, Knowsley Menagerie, Ungulata, 1850, 67.—Is. Pr. Zool. Soc. XVIII, 1850, 239. 
*© Cervus auritus, Warven, Hist. U.S. V, 640, French edition,”’ (fide Richardson.) 
Mule deer, Lewis & Ciarx. 
Sp. Cu.—Larger than C. virginianus. Horns doybly dichotomous, the forks nearly equal. Ears nearly as long as the tail. 
Gland of hind leg half as long as the distance between the articulating surfaces of the bone. 
In winter, ashy brown with light gray tips and annulations. Beneath, like the back, except about axillae and groin. Entire 
rump with basal two-thirds of tail all round white. The tail is cylindrical, a little longer than the ears, very slender, naked 
beneath, except at the end, which is a black tuft. 
The C. macrotis appears to be considerably the largest of our American deer, after the elk, 
exceeding the C. virginianus and C. lewisii very appreciably in size. From the examination of the 
portion of a skin brought by Dr. Newberry, Iam unable to substantiate the distinctions in 
the hoof from C. lewisit, as stated by Mr. Peale in the report of the Wilkes’ Exploring Ex- 
pedition. In fact, the character there given of a broad hoof to the former, and a narrow one to 
the latter, are completely inverted by my comparisons, the C. macrotis having a very long and 
slender sole, very different from that of the elk. The gland of the hind leg is very large, 
fully twice as long as the hind hoof, measured along its upper surface ; its lower end is distant 
by its whole length from the lower articulating surface of the bone, in which it is placed. It 
occupies two-fifths of the distance between the upper and lower articulating surfaces of the bone, 
falling on the second and third fifth of the bone, starting from the upper articulation. 
The hoofs of this specimen are long, slender and tapering; in the fore foot the side along 
the line of hair is about two-thirds the length of the upper edge, and nearly half this length 
in the hind foot. The greatest width between the exterior of the first hoofs is about two-thirds 
the length of their upper edge ; in the hind foot about four-sevenths, or nearly the width of the 
outer side of the hoof. 
The skin of the head exhibits in a marked degree the propriety of the name macrotis, the 
ears measuring seven inches from the notch, and standing, when fresh, according to Dr. New- 
berry, eight inches above the head. 
The hair is very coarse and brittle, resembling that of the antelope. The winter coat is very 
dense and full, almost shaggy, and without the compact smooth character of C. virginianus in 
winter dress. The ears are particularly well coated with hair, resembling somewhat those of 
a Newfoundland dog. 
The prevailing color of the adult is an ashy brown, pointed or varied with gray, and with- 
out any rusty tinge whatever. There is a distinctly marked stripe from the crown of the head 
to the root of the tail, the hairs in which are much darker throughout their extent than 
