The Proboscidia. 
203 
under the name of Tetrabelodon proavus.' Probably, the same 
species has been recorded by Whitfield, from the phosphate 
beds of South Carolina, and compared with M. obscurus. 
The skeleton of the European form is represented in Plate 
XII. In a lower jaw in my possession, the left ramus meas- 
ures m. 1.080 in length, of which .420 is symphysis. 
The Tetrabelodon etihypodon Cope was founded on a nearly 
perfect left mandibular ramus with last molar tooth and tusk, 
Fig. 7. Tetrabelodon euhyfodon Cope; Loup Fork bed of Kansas 
Palate with superior molars and superior incisors, of individual repre 
sented in Plate XIII; one-seventh natural size. Original. 
' This species was originally represented by a penultimate milk moL 
cross-crests, and the fragments of a probable last premolar. The fo 
t the size of that of the M. angustidens, but is more regularly quadra 
