90 PROCEEDINGS OF THE NATIONAL MUSEUM. 



T. terrest'i'is it is only 10.5 mm. In the lower teeth of the last-named 

 species there is a tubercle at both ends of the transverse valley ; in 

 T. tennesseae the tubercles are wholly missing. On the plate quoted 

 (figure 4) is the upper right third premolar. Its greatest length is 20 

 mm. ; its width, 19.5 mm. Figure 7 represents the lower right third 

 premolar. Its length is 22.5 mm. ; its width, 17 mm. The tooth of 

 figure 8, the lower right fourth premolar, is 20 mm. long and 17 mm. 

 wide. A fragment is missing from the inner border in front. Figure 

 9 is taken to be the lower right second molar ; length, 25 mm. ; width, 

 19.2 mm. 



The parastyle of the upper teeth of T. terrestris is more strongly 

 developed than in the Tennessee tapir, as well as the ridge descend- 

 ing from the summit of the paracone. Evidently, also, the hinder 

 transverse ridge is set farther forward in T. tennesseae than in T. 

 terrestns, so that the postfossette is larger. The position of the in- 

 cisor (pi. 3, fig. 11) has not been determined. Its crown is 12 mm. 

 wide and 11.5 mm. from front to rear at the base, 8 mm. from front 

 to rear of the hinder cusp, and 11 mm. high in front. Tapims ha.y.ni, 

 as represented by its teeth, was a much larger species. 



Family TAYASSUIDAE. 



MYLOHYUS NASUTUS Leidy. 



riiite 3, figs. 12-13. 

 This species appears to be represented by three upper canines 

 (Cat. Nos 8950-2, U.S.N.M.). Two of the canines are here figured 

 (pi. 3, figs. 12, 13). These are quite different in size, but the smaller 

 one may have belonged to a female. All of the teeth are worn, not 

 only in front, but also near the tip, on the outer or more convex 

 face. The large tooth has a diameter of 15 mm. at the base of the 

 crown and a thickness of 10 mm. The inner face is nearly flat; the 

 outer convex. Evidently the front border was broadly rounded, but 

 the hinder border forms a sharp edge. Both lateral faces are fur- 

 nished with grooves and ridges, the inner with about 8, the outer with 

 about 10 ridges. The ridges are sharper and more distinct than 

 in Platygonm comjiressus. This sculpture of the teeth is well 

 shown in Leidy's figure of the type of the species.^ From that 

 figure it will be seen that the upper canine is strongly curved. That 

 of P. comfresmi^ is not so much curved. 



Family CERVIDAE. 



ODOCOILEUS VIRGINIANUS (Zimmermann) . 



This species appears to represented by 5 upper molars, 15 

 lower molars, and 1 right first incisor. No premolars are present. 



' Joum. Acad. Nat. Sci., Phlla., vol. 8, 1869, p. 385, pi. 28, figs. 1, 2. 



