APP EN DIK, 
Art. LIII.—Notice of New Tertiary Mammals (continued); 
by O. C. Mars. 
__ THE present paper is a continuation of that on page 407. 
The remains here described were nearly all collected by the 
late expeditions from Yale College, and the type specimens are 
preserved in the Museum of that institution. 
Tillotherium hyracovdes, gen. et sp. nov. 
qiccally true of the last. They are hed essentially of a 
pair of external cones, connecte 
two oblique converging ridges. There is a small tubercle in 
the depression ne enclosed. The basal ridge on the posterior 
side is expanded, forming a low shelf. The antero-external 
cone has an outer cusp, which projects outward and forward. 
The md wim resent species was about two-thirds the size of a Tapir. 
rge upper pees are sub-triangular in transverse out- 
ling the or face being concave. The lower jaws and 
skeleton are not known with certainty. It is possible that the 
present remains may prove to be generically ney with 
Anchippodus minor Marsh (Trogosus castoridens ). 
Measurements. 
Ant tero-posterior diameter of large wd ted incisor, esi 
Frama Witieilt 25% 10020 2. ore el ee 15° 
Space occupied by last ee upper molars,. ..-.2--. 2-5 59° 
An ntero-poste rior diameter of first upper erie woler 3... 165. 
CROC CIMINO, 8 8 ak ho se a 0s hs - . 
Antero-posterior diameter of last upper molar,...--.---- 21° 
Trans We eo ck a es 38° 
