176 TEETIAET VEETEBEATA OE THE FATtrM, 



The ulna is known only from an imperfect upper half. The olecranon process is 

 large, but rises very little above the level of the sigmoid notch, which is deep; the 

 shaft narrows considerably beneath the articulation, and its anterior face is crossed 

 obliquely by a flat surface which united with the posterior face of the radius. 



Hind Limb. — The upper portion of a femur shows that the head is rounded, 

 somewhat pedunculate, and directed upwards. The greater trochanter is comparatively 

 small and does not rise to the level of the head. 



No bones of either the fore or the hind foot are known. 



Barytherium grave, Andrews. 



[Plate XVII. figs. 4-9.] 



1901. Bradytherium grave, C. W. Andrews, Tageblatt des V. Internationalen Zoologen-Congresses 

 Berlin, No. 6, p. 4 ; Geol. Mag. [4J vol. viii. pp. 407-8, figs. 3-4. 



1901. Barytherivm grave, C. W. Andrews, 'Nature,' Oct. 10th, vol. Ixiv. p. 577. 



1902. Barytherium grave, C. W. Andrews, Verhandl. d. V. Internationalen Zoologen-Congresses 



Berlin, p. 528. 



Type Specimen. — Portions of a skeleton including upper and lower jaws with teeth, 

 scapula, humerus, and radius (PL XVII. figs. 4-9) ; Geological Museum, Cairo. 



This species is the only one at present known. It appears to have been fairly 

 common, traces of several skeletons having been observed, but unfortunately in nearly 

 all cases the bones are completely broken up and only recognisable with difficulty. 

 They occur in the same beds as Moeritherium lyonsi and Eosiren libyca, with remains 

 of reptiles and fishes. Probably this animal lived in swampy country and perhaps was 

 semi-aquatic. In any case the form of the fore limb is such that it was almost 

 certainly used for something besides mere progression on firm ground, possibly, as 

 already suggested, for digging or scraping away the surface of the soil or for forcing 

 the animal through soft swampy ground. 



Form. & Log. — Qasr-el-Sagha beds (Middle Eocene) : north of Birket-el-Qurun. 



C. 10013. Maxillae and mandible with teeth, portions o£ scapulae, imperfect left humerus, left radius, 

 and upper portion of ulna. Type specimens found in association. Figured in Geol. 

 Mag. [4] vol. viii. pp. 407-8, figs. 3-4 ; and on PI. XVII. figs. 4-9. These specimens 

 have been described above. Their dimensions (in centimetres) are : — 



Upper teeth (PI. XVII. fig. 4) : Length. Width. 



pm.2 5-7 5-7 



pm. 3 3'9 6'5 



pm. 4 5 8 



m.l 5-9 8-4 



m. 2 7-5 8-6 



wi. 3 8'3 8'7 



