398 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL, XXXIV. 
annual rings of growth are seen at the base of the horn, so that, as 
Doctor Canfield * intimated it might have been suspected that the 
American Antelope did shed its horns merely by an examination of 
those structures. The horn of the Antelope can not be said to branch 
in the sense of the branching of the antlers of the deer. The prong 
in front is merely a modification of the shape of the horn substance 
proper and can not be considered as morphologically different from 
the various ridges and twists that occur on the horns of many of the 
typical Bovide. 
That each year’s successive growth of horn may not be shed in 
the Antelope as an abnormal process is beautifully shown in Mr. 
Pocock’s specimen, mentioned above, and to a less extent by the speci- 
-men illustrated.on Plate XX XIX. If the branching and shedding 
of the horns are regarded as the main family characters, then the 
castrated buck in the possession of the London Zoological Society 
possessed none of them. That the typical Bovide may as an abnor- 
mal event cast a horn in a manner entirely similar to that of the 
Antelope is shown in the case described by Grill? of a cow casting 
its horn, without traumatism. 
The aincine of the genus Antilocapra as the sole Pee of 
a family, Antilocapride, on an equality with the Cervide and the 
Bovide is unnatural, as was pointed out by Cope® long ago. The 
visceral anatomy, the osteology, and the dentition, as shown by Dr. 
James Murie,? associate Antilocapra with the Bovide. The only 
essential difference between Antilocapra and the other Bovide is the 
casting off of the annual increment of its horn. I see no reason on 
this account for its separation as a distinct family of the Artiodac- 
tyla. Its true position is clearly no more than an aberrant subfamily, 
Antilocaprine, of the Bovidee as the latter are at present understood, 
the essential characters of the subfamily being horns deciduous, with - 
a characteristic branch or prong in front, and absence of annual rings 
of growth at base of horn. In addition to these plainly seen char- 
acteristics may be mentioned the large number of cutaneous glands 
possessed by the American Antelope,’ 1 postmandibular, 1 ischial, 
2 interdigital, 1 hock, present as pairs, and a median gland on the 
lower back, above the white patch of the rump. Neither cerumen 
or lachrymal gland, nor inguinal glands are present, though often 
found in other Bovide. The ischial glands and the one on the 
lower back are not found on any of the other Bovide, so far as I am 
aware. Doctor Murie has shown that the. hair of the American 
“Proce. Zool. Soe. London, 1866, pp. 105-110. 
‘Der zoologische Garten, IV, 1863, pp. 254 and 255. 
¢ American Naturalist, XXII, 1888, p. 1081. 
@Proc. Zool. Soc. London, 1870, pp. 334-368. 
€ Proc. Zool. Soc. London, 1870, p. 8340; 1866, p. 106. 
