80 



TBRTIAET VERTEBEATA OF THE EATtJM. 



M. 8405. Right cuboid (text-fig. 34). 



C. 8327. Eight cuboid. 



M. 8834. Left cuboid. 



C. 9024. Left cuboid. 



C. 7971, C. 9036, C. 9059. Cuboids. 



The dimensions (in centimetres) of some of these cuboids^'are :- 



C.8327. 



Width of astragalar surface . . 6-2 



„ distal end of bone 6-6 



Greatest depth 4-0 



C. 9051. (?) Middle metatarsal (text-fig. 35, 2). 

 C. 9273. Lateral metatarsal (text-fig. 35, 1). 

 M. 8413. Middle metatarsal. 

 M. 8403 (2). Middle metatarsals. 

 11. 8403 a. Lateral metatarsal. 

 C. 9061. ? Metatarsal. 



Presented hy the Egyptian Government, 1904. 



Presented hy the Egyptian Government, 1904. 



Presented hy the Egyptian Government, 1902. 

 Presented hy the Egyptian Government, 1902. 



Arsinoitherium andrewsi, Lankester. 



[Plate IV. figs. 2, 3 ; text-fig. 38.J 



1903. Arsinoitherium andrewsi, E. R. Lankester, The Sphere, Sept. 1903, quoted in Geol. Mag. 



[4] vol. X. p. 531. 



1904. „ „ C. W. Andrews, Geol. Mag. [5] vol. i. pi. vi. figs. 1-3. 



Type Specimen. — A left maxilla with pm. 2-m. 3 and the associated mandible with 

 i. 1-m. 3, three cervical vertebrae, the distal half of a left humerus (text-fig. 38), and a 

 right ulna ; British Museum. 



This species is distinguished from A. zitteli by its much greater size, its dimensions 

 being nearly half as large again. The mandible attains a length of about 73 cm. ; 

 the length of the three posterior upper premolars and the molars taken together 

 is 345 cm. The lower premolars appear to have their crowns somewhat more 

 compressed from within outwards than is the case in the type species, otherwise the 

 dentition is closely similar in the two forms. The enormously massive humerus has 

 its condyles rather more strongly developed than in the other species, and the 

 flattening of the posterior face of the lemur seems to be even more strongly 

 marked. 



Form. & Log. — Fluvio -marine beds (Upper Eocene) : north of Birket-el-Qurun. 



