MCERITHEEIUM LYOXSL 123 



Length of m. 2 32 



m. 1 2-9 



,, pm. 4 2'1 



„ fm. 3 2'6 



M. 8898. Posterior portion of skull from which the cast of the brain-case M. 9116 was made. 

 Middle Eocene. 



M. 9116. Cast of cranial cavity of last specimen (text-fig. 41). Made in the British Museum. 



M. 9117. Plaster cast of the cranial cavity of the imperfect skull C. 10002. 



Made in the British Museum. 



C. 8831. (?) Much-worn lower tnsk (second incisor)^ showing the wear-surface truncating the 

 summit nearly at right angles and the very long but closed root, grooved above. 

 Total length 13 cm. ; width of crown 2'8. Upper Eocene. 



C. 8833. (?) Crown of a similar but much less worn tooth. The crown is covered with a thick 

 enamel which extends furthest down on the upper and lower faces ; wear-surface at 

 present a narrow band at right angles to long axis. Width of crown 2 cm. Upper 

 Eocene. 



C. 7910. (?) Upper tusk (second incisor), greatly curved ; root closed ; wear-surface on posterior 

 side of crown. Length in straight line 12'5 cm.; width of crown 2*6 cm. Upper Eocene. 



M. 8500. Right upper premolars and m. 1 of a large individual. The size of the teeth is somewhat 

 exaggerated by the cracking and slight displacement of the enamel (not shown in 

 figure) . The premolars are figured in PI. IX. fig. 4. Upper Eocene. The dimensions 

 (in centimetres) of the teeth are : — 



Length. Width. 



/pm.2 2-6 2-2 



pm.5 2-6 3-2 



pm.4: 2-2 2-9 



m. 1 ... 3-1 2-7 



Length of the premolar series 7'5. 



Presented by W. E. de Winton, Esq., 1903. 



C. iOOOl. Upper molars and premolars found close to type. Described and figured in Greol. Mag. 

 [4] vol. viii. (1901) p. 404, fig. 2 a : also PL X. fig. 2. Middle Eocene. The 

 dimensions (in centimetres) of these teeth are : — 



Length. Width. 



J9TO.2 2-7 2-3 app. 



pm.i 2-65 2-95 



pm.A 2-3 2-75 



m. 1 2-9 2-7 



m.2 2-6 (?) 2-35 



M. 8147. Plaster cast of the above specimen. Made in the British Museum. 



C. 8112. Right upper premolar. Upper Eocene. 



M. 8907. Portions of upper and lower jaws with imperfect teeth, axis, and two other cervical 

 vertebrae, some imperfect dorsals, and a fragment of a pelvis. Middle Eocene. 



Presented by the Egyptian Government, 1904. 



e2 



