2G4 
TERTIAKY A^EETEBRATA OF THE FAYOM. 
C. 10036. Anterior portion of sknll. Type sp(!ciinen, figured on PI. XXII. figs. 1, 1 A, 1b. 
'rii(' (liiiKMision.s (in centinudres) of this specimen ar(! : — 
Extreme length of specimen so far as preserved 43 
Distance from anterior angle of orbit to tip of snout ... 37 
AVidtli of skull at the level of the anterior angle of the orbits. 14 
,, snout at narrowest 4‘8 
„ premaxillary expansion 5-5 
„ nasal opening 2'7 
Lengtli of nasal opening 343 
Distance from anterior end of palatine fossa to tip of snout . 28'2 
R. 3322. Plast('r east of the above specimen. ]\Ja(le hi the British Museum. 
R. 3106. Anterior portion of snout of a larger individual. 
Presented Inj IF. E. de Winton, Esq., 1903. 
C. 10065. Nearly complete mandible. Figured on PI. XXII. figs. 2, 2 a. The dimensions (in centi- 
metres) of this specimen are : — 
Extreme length o5-8 
Length of symphysis lO'S 
AVidtb of symphysis at widest 8 app. 
Greatest depth of ramus 8 
AVidth of articular surface for quadrate 5 
R. 3323. Plaster east of the al)Ove specimen. Made in the British Museum. 
R. 3324. Symphysial portion of mandible of a rather large individual. Length of the symphysis 
13'4 cni. Presented In/ the Egijptian Government, 1904. 
R. 3105. Symphysial region of left ramus of mandible of a large individual. 
Presented In/ IF. E. de Winton, Esq., 1903. 
Crocodilus megarliiniis, Andrews. 
[Text-fig. 85.] 
190.5. Crocodilus mcnarliinus, C. AV. Andrews, Geol. Mag. [5] vol. ii. ]). 482. 
Type Specimen . — The anterior portion of a large skull (figured in text-fig. 85) ; 
British Museum. 
In this species the premaxillary region is considerably expanded, though longer in 
proportion to its width than in C. porosus ; the facial process of the premaxilla extends 
back to behind the fourth maxillary tooth. Five premaxillary teeth, behind the last a 
d('ep notch for the lower tooth. 
Form. cC' Loc. — Fluvio-marine beds (Upper Eocene) : north of Birket-el-(2nrnn. 
Bemains of a broad-snouted Crocodile, which attained very large dimensions, are 
found in the Upper Eocene beds. The most satisfactory specimen (text-fig. 85), which 
has been taken as the type of the species, is the anterior ])ortion of a snout. In this 
the premaxillary region is considerably expanded, but is longer in proportion to its 
