SYNOPSIS OP THE 



Icon. Le Valliant, ^c. Nobis from male and female in 

 the British Museum. 



Inhabit Central Africa, from CafTraria, and the borders 

 of the Gareep, across the deserts to Abyssinia *. 



Tribe IV. — Capri da. 



Horns persistent, vaginating upon an osseous nucleus, 

 totally or nearly solid ; the horny sheath receiving its in- 

 crease by annual ringlets at the base, which form in most 

 species annuli, wrinkles, or knots; many striated longitu- 

 dinally ; the horns often compressed; angular, or sub- 

 angular ; animals in general of a light structure, calculated 

 for springing or for swiftness ; ears erect, funnel-shaped ; 

 pupils oblong ; no canines in the mouth ; vertebrae of the 

 tail never descending below the hough ; stature very 

 various. 



Genus I. — Antilope. 



Incisors f ; canines §;^ ; molars f | = 32. Horns common 

 to both sexes, or in the males only ; bony core solid, with- 

 out sinus or pores, round, or compressed, generally stand- 

 ing beneath the frontal crest ; variously inflected, mostly dis- 

 tinguished by annuli, with longitudinal strias between them ; 

 sometimes pearled and forked ; the chaffron rather straight, 

 with a muzzle, half muzzle, or simple nostrils ; lachrymary 

 sinus in most, and in some a suborbital pouch; eyes large, 

 dark ; ears in general long, pointed ; inguinal pores ; a 

 gall-bladder. 



Sub-genus I. — Dicranocerus. Horns greatly com- 

 pressed, rough, pearled, slightly striated, with an anterior 



* The fossil teeth of a larg-e ruminating- animal found in Siberia, indi- 

 cate a lost genus, probably of this tribe. Mr, Bojanushas described them, 

 and named the genus, Merycotherinm Sibiriciim, in the Nov. Act. Acad. 

 Cces. Leap. CarcBl, ^'c. tome xii. 

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