136 
ZOOLOGY. 
temperature is much warmer, and their chances of obtaining a full supply of food much greater 
there than in the interior. In April or May they retreat to the interior, and to the foot-hills 
and spurs of the Cascade mountains, where they remain until the next cold weather — during 
the interval rearing their young. The fawns are usually dropped about the last of May, the 
dam frequently having two at a birth. They are spotted with white, resembling closely the 
3^oung of the Virginian deer. 
A fine male black-tailed deer was killed near White river, about thirty miles northwest of 
Fort Steilacoom, on the 28th of March, 1856. The skin was preserved and sent to "Washington 
city. This deer had no horns, having apparently recently shed them. Its ears, when mutually 
abducted their fullest extent, measured, from tip to tip, 23 inches; from occiput to tip of nose, 
16 inches; circumference behind shoulders, 3 feet 7 inches. The buck was considered very 
large. 
The name of the black-tailed deer, in the Nisqually language, is stuh-eh-o-otl. — S. 
Note. — The deer of Whidby's island, Puget Sound, are remarkable for the fact that frequently 
Avhite and mottled individuals are found among them. To what species they belong I am 
uncertain, but presume they are mere varieties or albinoes of the present species, which cer- 
tainly exists in great numbers on that island. In this opinion Mr. Gibbs coincides with me. — S. 
ANTILOCAPRA AMERICANA, Ord. 
Prong-horn Antelope ; Cabree. 
Baibd, Gen. Eep. Mammals, p. 666. 
LcAvis and Clark mention that the antelope exists on the great plains of the Columbia, 
though by no means as abundant as east of the Rocky mountains. I suspect that they are 
nearly if not quite extinct there, as I have never met them. Neither have I ever heard of 
them in Oregon tcest of the Cascades. I however saw them in large droves in the Shasta 
vallej', and siippose that they occur on the plains of California generally. — G. 
The antelope is, without doubt, sparing!}^ found in Oregon; but unless stragglers occur on the 
Spokane plains, it is doubtful Avhether it enters Washington Territory. Townsend corroborates 
Lewis and Clark's statement that they are found in Oregon, and I myself have been on expedi- 
tions in the vicinity of Snake river when some members of our party have seen them. They 
are said by the Indians to have been formerly quite plentiful at the Dalles of the Columbia, 
but they are now nearly exterminated in that locality. A few, however, are still found at the 
warm springs near the sources of John Dea's river, about 100 miles from Fort Dalles. — S. 
APLOCERUS MONTANUS. 
Mountain Goat. 
Ovis montana, Obd, Guthrie's Geography (2d Am. Ed.) II, 1815, 292, 309.~-Ib. J. A. N. Sc. I, i, 1817, 8. 
Aplocerus montanus, Eichakdson, Zool. of Herald; Fossil Mammals, 11,1852,131; pi. xvi-xix. Osteology. 
Baird, Gen. Rep. Mammals, 1857, 671. 
Capra americana, Baird, Rep. U. S. Pat. Off. Agricultural for 1851, (1852,) 120; plate. (From Rich.) 
AuD. & Bach. N. Am. Quad. Ill, 1853, 128; pi. cxxviii. 
Rocky 3Iountain Sheep, Jameson, " Wernerian Transactions, III, 1821, 30G." 
Mouniain Goal,, Mountain Sheep, While Goat, Sfc. , Vdlgo. 
IFoiL' of the Yakima, Walla- Walla, and Klickatat Indians. 
Sp. Ch. — Entirely white. Horns, hoofs, and edge of nostrils hlack. Hair long and pendant. A beard-like tuft of hair 
on the chin. 
This animal, described by Lewis and Clark, vol. 3, pp. 117, 118, is the American mountain 
