] . ANTILOCAPRA. 63 



fected and hardened, new hairs devclope themselves beneath the epi- 

 dermis ! (I. c. p. 402). 



The bony processes of the frontal bone are covered with a skin that 

 secretes an external horny coat, which is periodically deciduous 

 the new horny sheuth beiug formed within the cavity at the base of 

 the old sheatli. The horny sheath is formed of agglutinated hair 

 some of the hairs being fi-ee at the outer part of the base The 

 sheath, when first formed, is pale, soft, and flexible, but soon hardens 

 and becomes black. It has a compressed projection or prong on the 

 front edge below the tip. 



Intermaxillaries moderate, reaching the nasals. 



1. ANTILOCAPEA. 



Horns erect, arising directly over the orbits, compressed at the 

 base, with a flattened process in fi-ont, and ending in a conical re- 

 curved tip. Nose ovine, hairy. Muffle none. Tear-bag none. 

 Fur very short, close. Hair stiff, coarse, flattened, and wavy. 

 False hoofs none. Inguinal pores none. Tail very short. Leo-s 

 rather slender. Female horned. SkuU with no suborbital depres- 

 sion ; nasal bones wider behind, 



Antilocapra, Graij, Cat. Vngul. B. M. p. 116, t. 15. f. 1, 2, 3 (skull) • 



ok^T'^'n^TA'- ?^- ^- P- ^^■^' *• > '^^"'■'^' ^- ^- ^- 1870, pp. .355, 

 659, bgs. 6, 7 (skull). 



1. Antilocapra americana. (The Cabrit or Pronghom.) B.M. 



Antilocapra americana, Grai/, Cat. Um/id. B. 31. p. 117, 1. 15. f. 2 as 

 Dicranoceros fiucifer ; S. Baircl, 3Iamm. N. A. p. 665, t. ; Miirie 

 P. Z. S. 1870, p. 334 (anat.). ^ 



Dicrauoceros americanus, Turner, P. Z. S. 1850, p. 174. 



ffah. North America. In the plains in summer, and in the 

 mountains in winter. 



2. Antilocapra anteflexa. 



The horns compressed, dark brown, rugose, rounded and curved 

 and arched behind, compressed in front, becoming more so as they 

 reach the supramedian frontal process. The a2:>ex subtrigonal, 

 evidently compressed and angularly Imit foriuard rather aboTC the 

 compressed frontal process, with a deep furrow rather on the inner 

 side of the middle of the hinder part of the bend ; the inner edge of the 

 recurved tip is rounded, the outer compressed, rather produced and 

 shai-ped-edged; the extreme tip is roundish, tapering, with a white end. 

 Antilocapra anteflexa, Gray, P. Z. S. 1855, p. 10 (figure of boms). 



Hab. North America ? Mits. Derby, Liverpool. 



The colour, substance, and texture of the hair on the skin of the 

 forehead attached to the horns exactly resembles that of the Cabrit 

 or Pronghorn (Aniihccqva americana, Gray, Cat. Mam. P. M. 

 p. 117) ; and if it were not for the very peculiar form of these 

 horns, I should have been inclined to regard them as only the de- 



