PART I. 

 HORSES, ASSES, AND ZEBRAS. 



CHAPTER I. 

 THE HORSE. 



{Equus caballus. Linn.) 



In the views of modern zoologists all tlie species of wild 

 horses, asses_, and zebras at present existing constitute but 

 one genus, distinguished by the name Equus, the separation 

 of the asses and zebras into distinct genera under the 

 names of Asinus and Hippotigris, as has been proposed 

 by some zoologists, not being generally accepted. 



The number of the existing species of the genus Equus 

 cannot be accurately defined, but may be taken as not 

 exceeding twelve in number. 



1. Equus caballus (the Horse). 



2. Equus przewalskii (Prejevalsky's horse). 



3. Equus asinus (African wild ass). 



4. Equus asinus somalicus (Somali wild ass). 



5. Equus onager (the Hemione). 



6. Equus kiang (the Kiang). 



7. Equus hemippus (the Hemippe). 



8. Equus zebra (the Mountain zebra). 



9. Equus burchellii (Burchell's zebra). 



10. Equus chapmanii (Chapman's zebra). 



11. Equus grevyi (Grevy's zebra). 



12. Equus quagga (the Quagga). 



Several of these, it is probable, are mere local varieties, 



B 



