124 TEETIAET VERTEBEATA OF THE FAYtTM. 



M. 9114. Two posterior left upper molars. Middle Eocene. The dimensions (in centimetres) of 

 these teeth are : — 



Length. Width. 



m.2 3 2-8 



m. 3 • 3-2 2-8 



M. 8902. Third upper molar. Figured PL X. fig. 5. Middle Eocene. 



Presented hy the Egyptian Government, 1904. 



C. 8808. Nearly complete mandible, incisors and pm. 2 broken away. Upper Eocene. The 

 dimensions (in centimetres) of this specimen are : — 



Total length (not including incisors) 32-8 



Horizontal width of ascending ramus 16'5 



Length of molar series 9-9 



„ premolar series 7'1 



M. 8885. Anterior portion of mandible, showing symphysis and right ramus with pm. 3-4 and 

 m. 1-2. Upper Eocene. The dimensions (in centimetres) of this specimen are : — 



Length of symphysis 9'5 app. 



Length. Width. 



pm. 3 2-8 1-8 



pm. 4 2-0 2-1 



m.l 2-8 2-1 



m.2 3-4 2-7 



Presented by the Egyptian Government, 1904. 



M. 8898. Portion of mandible. Middle Eocene. Presented by the Egyptian Government, 1904- 



M. 8894. Portions of mandibles. Middle Eocene. Presented by the Egyptian Government, 1904. 

 M. 8901. Portion of left ramus of mandible with premolars. Middle Eocene. 



Presented by the Egyptian Government, 1904. 



M. 8895. Fragment of skull and anterior portion of mandible with much weathered incisors. 

 Middle Eocene. Presented hy the Egyptian Government, 1904. 



C. 8127. Portion of right ramus of mandible with pm. 2-4 in perfect preservation. Figured 

 on PI. IX. fig. 3. Upper Eocene. The dimensions (in centimetres) of the teeth are : — 



Length. Width. 



pm.2 2-3 1-1 



pm.'d 2-5 1-7 



pm. 4 2-4 2 



Length of premolar series 7. 



C. 7838. Posterior portion of the left ramus of the mandible, showing the last milk-molar with 

 the germ of pm. 4 beneath it ; m.l is just in wear. M. 2 and m. 3 are represented by the 

 alveoli only, and probably m. 3 had not yet emerged (text-fig. 43). Upper Eocene. 

 The dimensions (in centimetres) of the teeth are : — 



Length. Width. 



mm. 4 2"6 l-S 



pm,. 4 ^'2 



m.l 2-7 2-1 



M. 9233. Plaster cast of the above specimen. Made in the British Museum. 



