LIST OF ILLUSTEATIONS 



PAGE 



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



Eliinoceros (B) ....... 2 



2. — Skull of Female Tarpan, or Mongolian Wild Horse 



(Equus caballus przewalshii) .... 4 



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

 Mongolian Wild Horse {Equus caballus przeioal- 

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

 tives, 1912) 5 



4.— -Female Tarpan, or Mongolian Wild Horse {Equus 



caballus przeiualsliii) ...... 8 



5. — Female Kiang {Equus kiaiig). (From Lydekker, Proc, 



Zool. Soc. 1904) . . . . \ . .10 



6. — Female Kobdo Onager {Equus onager castaneus). 



(From Lydekker, Novitates Zoological, 1904) . 1.3 



7. — Head of Grevy's Zebra {Equus \I)oliclio1iippus'\ 

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

 tives, 1912) . .^ 15 



8. — Head of Grevy's Zebra {Eqiius [Dolichohippus] 



grevyi) ........ 16 



9. — Grevy's Zebra {Equus [Dolichohipjpus] grevyi) . . 17 



10. — The True, or Cape Quagga {Equus quagga quagga) . 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. O. Pym) . . 29 



13. — Male Masai Zebra {Eqtcus quagga granti). (From 



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



14. — Skin of Foa's Zebra {Equiis [Hippotigris] foai). 



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



15. — The ]Mountain Zebra {Equtis [Hippotigris] zebra) . 34 



16. — Male Nubian Wild Ass {Equus asinus africanus). 



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



17. — Head of a Great Indian Rhinoceros {Rhinoceros uni- 

 cornis) ........ 47 



