1 898. J Wortman, Extinct Camelidce of North America. 97 



From Hyomeryx it is readily distinguished by the full number 

 of superior incisors and by the diastema, although it resembles 

 this latter genus, which is described by Marsh' as having more 

 slender jaws than Protoreodon {Eomeryx). From the cameloid, 

 Leptotragitlus, it is easily separated by the numerous oreodont 

 characters which the skull exhibits, although the symphyseal region 

 is strikingly similar in the two genera. 



Of the hind foot, the cuboid, navicular and the head of the 

 third metatarsal are sufficiently preserved to afford characters for 

 identification. These bones indicate an animal with far more 

 slender limbs and feet than any of the Oreodonts with which I 

 am familiar. The navicular has an inconspicuous posterior hook 

 unlike that of the Oreodonts, and, judging from the much reduced 

 facet on the cuboid, the fifth digit was considerably diminished 

 in size if not entirely rudimental. The limb-bones are not well 

 enough preserved to confirm or negative this conclusion of the 

 slender and delicate proportions of the animal, but, upon the 

 whole, I think it may be safely concluded, from the evidence at 

 hand, that Leptoreodon held the same i)Osition with reference to 

 the American Oreodontidse that Xiphodon did to the European 

 Anoplotheriidae. 



The second genus to be described in this connection contains 

 species somewhat smaller in size and less perfectly selenodont. 



Bunomeryx montanus, gen. et sp. nov. 



There are two specimens in the collection which I classify 

 under this head, viz. : an anterior portion of a cranium somewhat 

 crushed, containing the maxillary dentition complete upon one 

 side, together with the greater part of the left mandibular ramus 

 of the left side having all the true molars and the last premolar 

 in good preservation (No. 2071). The second specimen consists 

 of a portion of a lower jaw with a few teeth, the posterior part of 

 the cranium, a nearly complete fore foot, portions of the hind 

 limbs and other parts of the skeleton (No. 2070). The first of 

 these specimens may be taken as the type, but there can be very 



•'Descriptions of Tertiary Artiodactyles,' Amer. Jour. Sci., Vol. XLVIII, Sept., 1894, 

 p. 268. 



\_April, iSgS.\ 7 



