88 PROCEEDINGS OF THE NATIONAL MUSEUM. 



EQUUS LITTORALIS Hay. 



In the collection there is a lower tooth of the right side of the jaw 

 of a small horse (Cat. No. 8947). The crovm is worn down nearly 

 to the base, the height being only 17 mm. and the roots are absorbed. 

 The length of the crown is 22 mm. ; the width in front, 13 mm. ; at 

 the rear, 11.5 mm. The outer median valley is pushed inward be- 

 tween the contigLious ends of the two inner valleys. The small size 

 of this tooth makes it probable that it belonged to Equus Uttoralis, 

 being too small for either E. complicatvs or E. leidyi. 



There are two incisors of a colt, which, on account of the small 

 size as compared with those of the young of the domestic horse, are 

 referred to E. littoralis (Cat. No. 8948). They are very little worn. 

 The larger has the crown 17 mm. high on the front face, 20 mm. 

 wide at the cutting edge, and 11 mm. wide at the base. The smaller 

 is somewhat more worn, is 13 mm. high, 16 mm. wide on the cutting 

 edge, and 10 mm. at the base. The roots of both teeth have been 

 gnawed off by rodents. 



Family TAPIRIDAE. 



TAPIRUS TENNESSEAE, new species. 



Plate 3, figs. 4-11. 



Type specimen.— Ten teeth. Cat. No. 8949, U.S.N.M. 



Type locality. — Whitesburg, Hamblen County, Tennessee. 



Type for^mation. — Pleistocene. 



Diagnosis. — Size probably smaller than in T. terrestris. Para- 

 style feeble, no tubercles at ends of valleys of lower teeth. 



In the collection are 10 teeth, which belonged to a young tapir. 

 These consist (as the writer identifies them) of an incisor; a right 

 third upper premolar, showing extremely little wear, having a large 

 pulp cavity and no roots; the front lobe of the right fourth pre- 

 molar, slightly worn; the hinder lobe of the upper left first molar, 

 with a band of attrition on the front of the transverse ridge; a 

 nearly complete crown of the upper right second molar, with the 

 anterior border gone, having a large pulp cavity and slight wear; 

 the lower left second premolar, slightly worn and injured; the lower 

 right third premolar, touched slightly by attrition ; the right fourth 

 premolar which had not yet been cut ; the lower right second molar, 

 without roots, with a large pulp cavity, and some wear on hinder 

 faces of the ridges ; the front lobe of the corresponding tooth of the 

 left side; and the as yet uncut lower left hindermost molar. They 

 have the catalogue number 8949. These have been compared closely 

 with the corresponding teeth of a specimen of Tapirus terrestris^ 

 from Guatemala (No. 61221 of the United States National Museum) 



