244 
'J'Ein'IA]{Y VERTEJ3HATA OF TJIE FATtiM. 
cntting-cdges as in Zeucjlodon, Lut the two posterior premolars and the first molar 
of tlie n])])er jaw have a postero-internal buttress, enamel-covered, and evidently the 
remnant of a ])ostero-internal cusp : in the premolars at least this buttress is supported 
by a large distinct third root. 
Te.xt-fig. 80. 
«?., alisphenoid ; «o./., autorbital foramen ; r., canine ; cojk/., occij)ital condyles ; /r., frontal ; i. 1-3, 
incisors ; jM., jugal; Za., lachrymal ; m. 1-3, molars ; wi.v., maxilla; vuf., nasals ; iinr., external nares ; 
optic foramen ; parietal ; ikjI., postglenoid process ; fm. 1-1, premolars ; jtm.v., j)remaxilla ; 
p.orh., postorbital process of frontal ; soc., supraoccipital ; Sij., squamosal ; -//^., zygomatic process of 
squamosal, j nat. size. 
The genus is at })resent known only from one species, remains of whicli were found 
in abundance by Mr. Beadnell * in a valley about 12 kilometres W.S.W. of Giar-el- 
Gehaimem, in beds of the 13irket-el-Qnrnn series, a horizon beneath that in -which 
* ‘ The Topography and Geology of the Fayum Province of Egypt’ (Survey Department, Cairo, 1 905), ]). 17. 
