MUSEUM OF COMPARATIVE ZOOLOGY. 



79 



in Eume/opias. The coronoid processes are high and pointed, but much 

 more developed in the males than in the females. The rainial tuberosities 

 are greatly produced, especially the hinder one (see Figs. 8-10, PI. II). 



Measurements of the Skull. 



Length 



Breadth 



Dist. from ant. edge of intermax. to end of ham. pteryg 



" " " last molar 



" " auditory opening 



" " edge of max. condyle 



" palato-max suture to end of ham. pteryg. 



Length of left palatine bone 

 Breadth of left palatine bone opposite last molar 

 Length of left nasal bone .... 

 Breadth of lefc nasal bone (anteriorly) 



" " " (posteriorly) 



Breadth of skull at canines .... 



" " " postorbital processes 



" " " paroccipital " 



" posterior nares (vertical) 



" " " (transverse) 



" anterior nares (vertical) 



" " " (transverse) 



Length of zygomatic foramen 

 Breadth of " " 



Greatest height of skull ( mast. proc. to top of occip. crest) 

 Height of skull at hamulus ptcrygoideus . 

 Length of postorbital cylinder 



" brain-case ..... 



" the lower jaw .... 



Breadth of lower jaw at its condvles 



" " " last molar 



" " " symphysis 



Height " " coronoid process 



" " " symphysis 



*c 



245 275 

 145 155 

 140 165 

 88 97 

 180,205 

 153 165 



185 200 

 115 117 

 120 124 



63 75 

 135 145 

 120 135 



58| 58 

 25 25 

 10 10 

 33 

 11 

 6 



34 33 

 42 40 

 91 95 

 15 13 

 20! 21 1 



— 23 



— 23 | 



64 68 



40 41 



75 76 



— 75! 

 29 30 

 80 76| 



120 1261 

 90| 93 

 33 1 35 

 24 24| 



35 37 

 23| 21 



O* 



137 



20 



Teeth. — The molars are closely set in a continuous row. The ca- 

 nines (Fig. 7 c and 7 c', PI. II, upper canines) are large and sharply 

 pointed, the lower slightly curved. The outer upper incisors (Figs. 6 a and 

 7 a, PI. II) are much larger than the others, but relatively smaller than in 

 Eumetopias. The middle incisors are flattened antero-posteriorly, and in 

 youth and middle age have their crowns transversely divided (Figs. 6 a and 

 7 a, PI II, upper incisors seen from the side). The lower incisors (Fig. 6 d, 

 PL II) are similarly divided and are quite small. The crowns of the mo- 



