List of Casts, Models, and Photographs. I I 



24. Systemodon primaevus Wortman. 

 Palate and Lower Jaw. 



Am. Mus. Nos. 144 and 131. 

 Suessonian (Wasatch Beds) Wyoming. 



Systemodon is the starting point, as far as known, of the 

 Tapir line, and strikingly resembles in most respects the con- 

 temporary ancestors of the Horse {Hyracotherium, etc.). 



Price, $4. 



OsBORN & Wortman, Fossil Mammals of the Wasatch and Wind River 

 Beds, Collection of 1891, Bull. Amer. Mus. Nat. Hist., IV, 1892, 

 p. 125, fig. 17. 



Wortman, Species of Hj^racotherium , etc., Bull. Amer. Mus. Nat. Hist., 

 VIII, 1896, p. 87, fig. 3. 



25. Protapirus validus Hatcher. 

 Skull. 



Type specimen (Original in Princeton Museum). 



Protoceras Beds, White River Formation (Oligocene), S. Dakota. 



Price, $7. 



Hatcher, Recent and Fossil Tapirs, Amer. Jour. Sci., I, 1896, p. 162, 

 pi. ii. 



26. Protapirus obliquidens Wortman & Earle. 

 Lower Jaws and Fore Foot. 



Am. Mus. Nos. 661 and 662. 



Protoceras Beds, White River Formation (Oligocene), S. Dakota. 



Protapirus is intermediate between the modem Tapirs and 

 their primitive Eocene ancestors (Systemodon and Isectolo- 



^^^^)- Price, $6. 



Wortman & Earle, Ancestors of the Tapir from the Lower Miocene 

 of Dakota, Bull. Amer. Mus. Nat. Hist., V, 1893, p. 165, figs. 2. 



3. 4. 



