1881.] 1"^ [Cope. 



Measurements of superior teeth. M. 



Length of base of P-m. 1 0040 



Diameters P-m. Ill { anteroposterior 0070 



Uraasverse 00(8 



-p.. ^ -r, TTT f anteroposterior 0070 



Diameters P-m. IV- ^ ._„. 



t- transverse .0090 



Diameters M. Ill \ anteroposterior 0100 



c transverse Ol^o 



Some superior molars in better condition than those last described, ex- 

 hibit the following characters. The intermediate tubercles are fused with 

 the internal, forming a continuous cross crest, but their apices are dis- 

 tinguishable. The external cusps are subconical and are well separated. 

 The anterior and posterior cingula are strong, the external is weaker, and 

 it is wanting from the posterior part of the internal base of the crown. 



A portion of a mandibular ramus, supporting six molars, presents the 

 following characters. The teeth are a little smaller than those of S. 

 tapirinus, the reduction being especially visible in the premoha-s. The 

 cones of the crowns are more distinctly separated by notches than in that 

 species, and are quite distinctly conic. The anterior ledge of the true 

 molars is distinct, and there is a median posterior tubercle of the first two, 

 which is represented by the wide crenate -edged heel of the third true 

 molar. The anterior-internal cusps of the last two molars is double or 

 bilo bed ; that of the first is last. The anterior cones of the fourth pre- 

 molar are subequal, and the posterior external cone is elevated. There is 

 a trace of the posterior internal. There is also an anterior ledge. The 

 heel of the third premolar rises to a median blade and posterior cusp. 

 The anterior cusp is elevated and compressed, and supports a small in- 

 ternal lateral cusp. The base of the crown of the third premolar is 

 elongate. All the teeth are rather compressed, and there is only a 

 trace of an external cingulum. 



The ramus is compressed and moderately deep. The dental foramen 

 is large, and its superior border is on a level with the posterior base of the 

 crown of the third true molar. Its inferior base is in line with the base of 

 the crown of the second true molar. 



Measurements of mandible. . M. 



Length of last six molars 0530 



" true molars 0310 



/ anteroposterior 0065 



Diameters third premolar } transverse 0040 



(vertical 0053 



/anteroposterior 0093 



Diameters second true molar } transverse 0060 



( vertical 0063 



-p.. i ^1 • 1 » 1 (anteroposterior 0130 



Diameters third true molars ■, ' _^„_ 



I. transverse uuou 



Depth of ramus at P-m. Ill 0170 



Depth of ramus at front of M. Ill 0330 



