LIST OF ILLUSTRATIONS. 



FIG. 

 I. 

 2. 



3- 



4- 



5- 

 6. 



INTRODUCTION. 



Young Prjevalsky horses . 

 Young Prjevalsky mare . 

 Two year-old Prjevalsky horse . 

 A Highland pony of the forest type 

 An Iceland pony of the Celtic type 

 A yearling Prjevalsky stallion . 



PAGE 



viii 



ix 



xi 



xii 



xiii 



XV 



Equus Prjevalskii Poljak 



Frontispiece 



2. Measurements of parts of the body of Equus Prjevalskii . 



3. Prjevalsky horses in the possession of F, A. Falz-Fein, 



among them a bastard zebra . 



4. Equus Prjevalskii. Stuffed specimen 



5' >' >' " " 



6. Skull of Equus Prjevalskii . . . Facing page 



7. Skull of Equus asinus 



8. Mandible of Equus Prjevalskii 



9. Mandible of the ass {Equus asimis) 



10. Series of upper cheek teeth . . . Facing page 



11. Atlas (ventral aspect) 



12. Atlas (dorsal aspect) 



13. Axis (lateral aspect) 



14. Sixth cervical vertebra (lateral aspect) 



15. First thoracic vertebra (lateral aspect) 



16. Eighteenth thoracic vertebra (lateral aspect) 



1 7. Lumbar vertebra (caudal aspect) 



18. Sacrum (dorsal aspect) 



19. Scapula (lateral aspect) 



20. Humerus 



21. Radius and ulna 



22. Innominate bones Facing page 



23. Femur 



9 

 13 

 14 

 23 



24 

 35 

 36 

 40 



43 

 44 

 44 

 45 

 46 



47 

 47 

 48 



49 

 50 



52 

 53 

 54 



