MAMMALIA. 263 
Guithrie’s Geography, published in 1815; and in 1818, the same’ naturalist pub- 
lished in: the Journal de Physique an account. of a new genus founded upon it, 
which he termed Antilocapra. M. Blainville having inspected a pair of horns of 
this antilope in the Museum of the College of Surgeons, where they were attached 
to a board with their points in a wrong direction, published a notice of them in 
1816, wherein he named the animal to which they belonged Cervus hamatus ; and 
am account and figure of Lewis and Clark’s specimen, taken by Major Smith in 
1817, appeared, in 1823, in the 13th volume of the Linnean Transactions. 
Major Smith considers the horns mentioned by M. Blainville to belong to a 
distinct species, whose name he has altered to Antilope palmata. From this 
detail it is evident that the specific name of Americana is the prior one; but 
the term furcifer having been generally adopted by naturalists, I have retained it 
here, including under it also the Antilope palmata, as I conceive the greater 
breadth of the horns to be merely the effect of age. The term Americana is 
objectionable as a specific name, where more than one species of the same genus 
exists in that country, and in reference to the present mstance, the animal which 
will be afterwards described and figured as the Capra Americana, is by several 
eminent naturalists considered to be an antilope ; and if it is to be permanently 
placed in that genus, a change of name either of it or of the species at present 
under consideration would be indispensably necessary. The Antilope furcifer 
differs from the true antilopes, in having asnag or branch on its horns, and 
wanting the crumens or lachrymal openings, and also in being destitute of the 
posterior or accessory hoofs, there being only two on each foot. 
_ The most northerly range of the prong-horned. antilope is latitude 53°, on the 
banks of the north branch of the Saskatchewan. Some of them remain the whole 
year on the south branch of that river, but they are merely summer visitors to the 
north branch. They come every year to the neighbourhood of Carlton-house, 
when the snow has mostly gone ; soon after their arrival the females drop their 
young, and they retire to the southwards again in the autumn as soon as the 
snow begins to fall. Almost every year a small herd linger on a piece of rising 
ground not far from Carlton-house, until the snow has become too deep on the 
plains to permit them to travel over them. Few or none of that herd, however, 
survive until the spring, as they are persecuted by the wolves during the whele 
winter. They are found in the summer season in the fifty-third parallel of latitude, 
from longitude 106° to the foot of the Rocky Mountains. According to Lewis 
and Clark, they also abound on the plains of the Columbia to the west of the 
