NEW YORK ZOOLOGICAL PARK. 51 
ly over the steep roof, or perching upon its peak, is one of 
the drollest sights of the Park. 
The White Goat, sometimes mistakenly called ‘‘goat an- 
telope,’’ belongs to a smail group known as the Rupicaprines 
or rock antelopes. It inhabits many different kinds of ter- 
ritory, but usually the rugged sides and summits of high 
mountains, at irregular intervals from southwestern Mon- 
tana and northern Washington, northward to the head of 
Cook Inlet on the coast of Alaska. (See map of distribution, 
with label.) The valley of the upper Yukon contains prac- 
tically no goats. They are most abundant in southeastern 
British Columbia, where in a very small area, in September, 
1905, Mr. John M. Phillips and the writer actually counted 
239 individuals. 
Of the-five animals now exhibited in the Park, three were 
captured a few days after their birth, in May, 1905, about 
seventy miles north of Fort Steele, British Columbia. They 
arrived here October 9, 1905, and up to this date they have 
thriven as well, and grown as rapidly, as they would have 
in a state of nature. Their food consists of the best clover 
hay obtainable, and crushed oats. When they shed their 
coats, in the spring, they are almost as white as snow, but 
with months of use, their pelage becomes soiled and slightly 
discolored. 
A fully adult male mountain goat stands from 39 to 41 
inches in shoulder height, and weighs, on scales, from 258 to 
300 pounds. 
THE PRONG-HORNED ANTELOPE. 
The Prong-Horned Antelope, (Antilocapra americana), is 
an animal in which Americans should now take special in- 
terest. Structurally, the Prong-Horn is so peculiar that it has 
been found necessary to create for it a special zoological 
family, called Antilocapridae, of which it is the sole mem- 
ber. This is due to the following facts: (1) This is 
the only living mammal possessing hollow horns (grow- 
ing over a bony core) which sheds them annually; (2) it 
is the only animal possessing a hollow horn which bears a 
prong, or bifurcation; (3) it has no ‘‘dew claws,’’ as 
other ruminant animals have; (4) the horn is placed 
directly above the eye; (5) the long hair of the body 
and neck is tubular; and (6) that on the rump is erectile. 
Beyond all possibility of doubt, it will be our next large 
