128 
'lEIiTlAIiY VEKTEP.IiATA OF THE EAYCM. 
concave at hotli ends, Tlie transverse })rocesses oE all exce[)t the seventh are perEorated 
by a vertebrarterial canal, and on the anterior ones there is a strong hypapophysial 
ridge on the hinder end oE the centrum. 
The anterior dorsal has an oval biconcave centrum ; the external angles oE the 
posterior Eace bear concave facets Eor the capitulum of the rib ; the transverse process 
is stout and short and bears a large do'vvnvvardh^- directed tubercular facet, strongly 
concave from before backwards. The other dorsal centra have a straijxht neural border 
and are strongly convex below. The lumbar centra are similar, and bear on their 
sides strong flattened transverse ju’ocesses. 
Height of 
W id til of 
Length of 
anterior face. 
rfilto. 
centrum. 
Atlas 
7'o 
6-5 (with odontoid). 
Last cervical . . . . 
. . . 3-3 
3-.5 
2-6 
Anterior dorsal 
. . . 3-3 
3-8 
2-8 
Postei'ior dor.sal . 
. . . 3-8 
Po app. 
3-8 
Lumbar 
. . . 3-8 
4-7 
3-8 
II. 8191. Plaster cast of palatal region of type skull. Made in the British Museum. 
M. 8912. Left upper molars. Figured on PI. XVII. fig. 3. These teeth show the well-developed 
cingulum and the peculiar sculpturing of the enamel. The dimensions (in centimetresj 
are : — 
Length. 
Width. 
2-5 
2-1 
))U 
2-7 
2-3 
m. 
•> 
2-,S 
2-5 
I’re.senfeil Inj the Egyptian Government, 190-1. 
il. 9229. Centrum oE axi-; with odontoid. Presented hy Baron Franz Xopesa, 1905. 
Moeritherium trigonodon, Andrews. 
[Plate IX. fig. 5.] 
1901. .]f(rritherium irigodon, (h W. Andrews, Gcol. IMag. [5] vnl. i. |i. 112. 
Type Specimen. — I’osterior portion of right ramus of mandible (PI. IX. fig. 5) ; 
British Museum. 
This species is distinguished hy the form of the posterior lower molar, which narrows 
j)osteriorly, the talon consisting almost entirely of one large tubercle ; also by the 
rapidity with which the teeth decrease in size from behind forwards. 
Form. & Loc. — Fluvio-marine beds (Upper Eocene) : north of P>irkct-el-Quruu. 
