LIST OF ILLUSTBATIONS 



PAGE 



Fig. 1. Bones of the Left Fore-foot of a Horse (A) and of a 



Rhinoceros (B) ....... 2 



2. Skull of Female Tarpan, or Mongolian Wild Horse 



(Equus caballus przewalskii) .... 4 



3. The Eight Upper Cheek-teeth of the Tarpan, or 

 Mongolian Wild Horse (Equus caballus przewal- 

 sJcii). (From Lydekker, The Horse and its Rela- 

 tives, 1912) 5 



,, 4. Female Tarpan, or Mongolian Wild Horse (Equus 



caballus przeiualsltii) ...... 8 



,, 5. Female Kiang (Equus Jciang}. (From Lydekker, Proc. 



Zool. Soc. 1904) 10 



,, 6. Female Kobdo Onager (Equus onager castaneus}. 



(From Lydekker, Novitates Zoologicx, 1904) . 13 



,, 7. Head of Grevy's Zebra (Equus [Dolichohippus'] 

 grevyi). (From Lydekker, The Horse and its Rela- 

 tives, 1912) . . 15 



,, 8. Head of Grevy's Zebra (Equus [Dolichohippus] 



grevyi) ........ 16 



,, 9. Grevy's Zebra (Equus {Dolichohippus'] grevyi) . . 17 



,, 10. The True, or Cape Quagga (Equus quagga quag g a] . 20 

 ,, 11. Cuninghame's Zebra (Equus quagga cuninghamei) . 



(From a photograph by Mr. F. A. 0. Pym) . . 28 



,. 12. Cuninghame's Zebra (Equus quagga cuninghamei). 



(From a photograph by Mr. F. A. 0. Pym) . . 29 



,, 13. Male Masai Zebra (Equus quagga granti). (From 



Sclater, Proc. Zool. Soc. 1901) .... 31 



,, 14. Skin of Foa's Zebra (Equus [Hippotigris] foai). 



(From Lydekker, The Horse and its Relatives, 1912) 33 



,, 15. The Mountain Zebra (Equus {Hippotigris} zebra] . 34 



,, 16. Male Nubian Wild Ass (Equus asinus africanus}. 



(From Lydekker, Novitates Zoologicx, 1904) . . 37 

 ,, 17. Head of a Great Indian Ehinoceros (Rhinoceros uni- 



cornis) . . . . . . . .47 



