16 



VERTEBKATA. 



No. 23. [102] Tapirus Arvernensis, Croiz. aud Job. 



Palate and Jaw 

 (cast). This extinct 

 Pachyderm differed lit- 

 tle from the Tapir of 

 Sumatra. The molars 

 show the same bilopho- 

 dout or two-ridge type. 

 The upper jaw, when 

 full, contains seven molars, one canine, and three incisors. This specimen 

 was found in the Pliocene of Auvergne, Central France, and is in the Garden 

 of Plants. Size, 9 x 12. 



FAMILY BRONTOTHERID^ (MENODONTID^). 



This family is found only in the upper Eocene and lower Miocene 

 of the American lake-beds. 



No. 24. [1255] JMenodus (Titanotherium) Prputii, Leidy. 



Head (cast). This creature was one of the largest of the strange Tertiary 

 mammals found in the Lake-beds of the Rocky Mountain region. It was 

 about the size of an elephant, but with shorter legs, its proportions resembling 

 those of the Rhinoceros. The skull is large and elongated, being in some 

 specimens three feet long. The maxillaries bear, in front of the orbits, a pair 



of stout diverging protuberances, which doubtless indicate horns. The teeth 

 are intermediate in character between those of Palmotherium and Rhinoceros, 

 excepting the peculiar incisors which have tuberculate crowns, resembling 

 the palatel teeth of fishes. It had no tusks and no proboscis, but probably a 

 Tapir-like snout. The fore feet have four short stout toes, and the hind feet 

 three. 



These specimens are from the lower Miocene of the Black Hills, Dakota. 

 Original in possession of Ward and Howell. Size, 20 x 26. 



