PLATE XIX. 



Eig. Page 



1. Oeniohyus mirus, Andrews ; symphysis and right ramus of mandible, side 



and (1 a) upper views : nat. size. Fluvio-marine beds (Upper Eocene). 



[Type specimen, C. 8634.J 193 



2. Geniohyus fajumensis, Andrews ; portion of right ramus of mandible with 



the premolars, side and (2 a) crown views : nat. size. Same horizon. 



[Type specimen, M. 8435.] 195 



3. Fterodon africanus, Andrews ; right ramus of mandible with cheek-teeth, 



outer view : two-thirds nat. size. Same horizon. 



[Type specimen, M. 8503.] 220 



4. Afterodon macrognathus, Andrews ; right ramus of mandible with much- 



worn and broken teeth, inner view : two-thirds nat. size. Same horizon. 



[M. 8437 b.J 226 



5. Ditto ; two right lower molars (m. 2, m. 3) much abraded, inner view : two- 



thirds nat. size. Same horizon. [M. 8436.] 226 



6. Sinopa ethiopica, sp. nov. ; portion of left ramus of mandible with broken 



teeth, inner and (6 a) crown views : nat. size. Same horizon. 



[Type specimen, C. 10193.] 233 



7. C?) Apterodon macrognathus, Andrews ; distal end of right humerus, front 



and (7 a) back views : two-thirds nat. size. Same horizon. [M. 8504.J 231 



c, socket of canine. 

 e.f., entepicondylar foramen. 

 i. 1-3, incisors. 

 i.e., inner condyle, 

 m. 1-3, molars. 



m.f., mental foramina. 

 ol.f., olecranon fossa. 

 pm. 1-4, premolars. 



pr., process from lower border of mandible. 



