45 



toe, and that this was much smaller than in the tapir. This appears to be 

 confirmed by the specimen represented in Fig. 5, Plate XX, which I suppose 

 to be a middle metatarsal of Palaeosyops. It was found by Dr. Corson in 

 the vicinity of Fort Bridger. It resembles the correspondibng one of the 

 tapir, but is shorter and of more slender proportions. It has about the size 

 of the lateral metatarsals of the tapir. 



Figs. 6 and 7, Plate XX, represent a first and second phalanx, probably of 

 Palaeosyops. ' The specimen of the first was obtained by Dr. Carter on Henry's 

 Fork of Green River; the specimen of the second was found near Fort 

 Bridger. 



A specimen of a metacarpal, which I suppose to belong to Palaeosyops, 

 was obtained by Dr. Corson at Grizzly Buttes. It has about the same length 

 as the middle metatarsal attributed to Palaeosyops, but is somewhat wider. 

 If it corresponds with the second of the series of four toes of the fore foot 

 of the tapir, it exhibits a corresponding reduction in relation with the con- 

 tiguous toes that the middle metatarsal does to the others of the hind foot. 



Pal^osyops majok. 



A larger species of Palaeosyops is apparently indicated by some fragments 

 of large bones obtained by Dr. Carter at Grizzly Buttes and other localities 

 in the vicinity of Fort Bridger. Several of the specimens consist of portions 

 of limb-bones, but too much mutilated either for description or representa- 

 tion. Even the best specimen, consisting of a fragment of the lower jaw, rep- 

 resented in Fig. 8, Plate XX, is barely more than sufficient to render it 

 probable that it pertained to Palaeosyops. The jaw-specimen is furthermore 

 in some degree abnormal in form, due to inflammation or some other affection 

 connected with the second molar tooth. The bone outside the position of 

 the latter is much swollen, and the alveolar border is hollowed out and irregu- 

 lar. The alveolus is also filled with the clay matrix, so that the tooth was 

 perhaps lost before the death of the animal. In its proportions, the jaw, in a 

 normal condition, would appear to be of more robust character than in 

 Palaeosyops paludosus. In its present state, the base is more convex fore and 

 aft than in the latter, and the alveolar border more ascending posteriorly. 



The remains of the molar fangs at the entrance of the alveoli appear to 

 indicate teeth of the same form and construction as in Palaeosyops paludosus, 



