217 



species. It is more square than in the recent peccary, and has the four con- 

 stituent lobes of the crown comparatively smooth and devoid of wrinkles. 



Measurements of the specimens referred to Dicotyles pristinus are as fol- 

 lows: 



Lines. 



Antero-posterior diameter of last lower molar 9 



Transverse diameter of last lower molar ; 5 



Antero-posterior diameter of penultimate lower molar 7 



Transverse diameter of penultimate lower molar 5J 



Antero-posterior diameter of first or second upper molar 6 



Transverse diameter of first or second upper molar 5£ 



Professor 0. C. Marsh has also described some remains of peccaries from 

 the same locality, which he attributes to two species under the names of 

 Dicotyles hesperius and Platygonus Condoni. The former is estimated as about 

 half the bulk of the collared peccary, the latter as being about the size of 

 the hog. 



ELOTHERIUM. 



Elothekium imperatoe. 



Mr. Condon's collection of Oregon fossils contains portions of several teeth 

 of large size, which are supposed to belong to a huge species of Elotheriuin, 

 for which the above name is proposed. 



One of the specimens, represented in Fig. 3, Plate II, is a portion of a 

 large canine tooth, from Bridge Creek. In the perfect condition the tooth 

 would appear to have measured upward of 7 inches in length. The crown 

 has measured about 3£ inches long, with the diameter at base antero-posteriorly 

 about 22 lines, and transversely about 20 lines. The enamel is moderately 

 rugose, except near the back border of the crown, where it exhibits a more 

 folded or ridged appearance. The gibbous fang has been over 4 inches in 

 length, with the fore aud aft diameter about 2 inches and the transverse 

 diameter 20 lines. 



Another mutilated specimen, from Bridge Creek, supposed to be an upper 

 incisor, is represented in Fig. 27, Plate VII. When complete, the tooth has 

 measured over 4 inches in length. The fang is long, conical, and nearly 

 straight. The crown forms with its fang an obtuse bend or angle. It is 

 conical, compressed from without inwardly, and has the lateral borders sub- 

 acute and somewhat expanded toward the base. 

 28 g 



