* PECOEA. 



Fam. 9. Antelopid^. Horus conical or compressed, ringed 

 at the base. Nose tapering, ovine, simple. False hoofs 

 distinct. Crumen generally large. 



Fam. 10. ^PTCEROTiD^. Horns conical, compressed, ringed at 

 the base. Nose tapering, o\'ine, simple. Crumen none. False 

 hoofs none ; pastern with tufts of rigid black hair on each 

 side. 



B. Nostrils vnkular, hairy within. 



Fam. 11. CoxxocHETiD^. Nose broad, depressed, spong)-, 

 bristly, subequal. Horns conical, depressed at the base, 

 and spread out at the sides. False hoofs distinct. 



Fam. 12. Damalid^. Nose conical, bovine, with a moderate 

 naked muffle. Horns conical, compressed, more or less 

 lyrate and annulated. False hoofs distinct. 



Section II. Angulicoi'nia. Horns subangular, with a more or less 

 distinct ridge on the front angle. Nostrils open, bald within. 



Fam. 13. Strepsicerotid^. Horns subspiral, suberect, or in- 

 clined backwards. Nose cervine or bovine ; nostrils near 

 together in front. Forehead flat. Males not bearded on 

 the chin. Fur white-banded or spotted. Females with 

 four teats and a small udder. 



Fam. 14. C'aprid.e. Horns erect, compressed, curved back- 

 wards, with a longitudinal keel in front, deeper than wide 

 at base. Nose ovine or cervine ; nostrils close together in 

 front. Forehead convex, elevated behind. Chin of males 

 bearded. Crumen none (?). Hoofs 4-sided, scarcely 

 higher before than behind. Teats two, rarely four. Males 

 emitting a strong stench. 



Fam. 15. Ovid.s. Horns more or less spb'al, wider than deep 

 at base, slightly angulate in front, often wanting in the 

 females. Nose ovine. Forehead flat or concave. Chin 

 of males not bearded. Hoofs triangular, shallow behind. 

 Males not emitting a strong stench. 



Suborder II. DICRANOCERA. Front of upper jaw callous, tooth- 

 less. Horn-like processes of the frontal bone permanent, covered 

 with a hairy skin and a deciduous subhorny sheath formed of 

 matted hair. False hoofs none. 



Fam. 16. Axtiiocaprii).!;. 



Suborder III. DEVEXA. Front of upper jaw callous, toothless. 

 Horns permanent, on the coronal suture, between the frontal 

 and parietal bones, covered with a permanent hairy skin ending 

 in a tuft of hairs. False hoofs none. Intermaxillaries mode- 

 rate, reaching to the nasals. 



Fam. 17. Giraffid.s:. 



