TERTIAKT VEKTEBRATA OF THE FATCtM. 
A spec'inicn (text-fi". 86), consisting of the anterior portion of the upper and lower 
jaws ill tlieir natural position with regard to one another, was also obtained from the 
sa,me horizon, and may be referred to this species with some confidence. There are 
five ])remaxillary teeth, the second * being very small and situated close in front of the 
lliird. The first, third, and fourth teeth are large; the fifth is small, and behind it 
there is a considerable diastema where the sides of the snout are hollowed out for the 
reception of the large fourth mandibular tooth. The alveoli, with the bases of four 
subequal maxillary teeth, are preserved. As in the mandible, the borders of the 
alveoli are very prominent, and the teeth seem to have been directed somewhat 
forwards. The premaxillary region is slightly expanded, and the nasal opening 
is large and heart-shaped, with the point directed backwards. Unfortunately, none 
of the sutures can be seen, so that the relations of the nasals and premaxillae cannot 
be determined. The mandible, so far as preserved, agrees with that described above ; 
the large size of the fourth tooth is well shown. 
Witli the exception of the presence of a fifth premaxillary tooth, this specimen 
agrees in all essentials with the corresponding parts of the skull and mandible of 
Tomidoma schlegeli. 
C. 10006. MunJit)le. Typo specimen described in Geol. Mag. [4] vol. viii. 1901, pp. 443-444. 
The dimensions (in centimetres) of this 
Figured on Tl. XXIII. figs. 1, 1 A, 1 B. The 
specimen are : — 
Total length 
Length of symphysis 
Width at narrowest part of symphysis . 
lOG 
49-5 
4B 
11 
4-5 
12 
4-2 
posterior end of symphysis 
Depth of ramus at posterior end of symphysis . 
Greatest depth of ramus 
Width of articular surface for quadrate . . . . 
Made in the British Aluseum. 
R. 3330. Plaster cast of the above specimen. 
R. 3201. Anterior portion of rostrum and mandible in their natural position with regard to one 
another. Figured in text-fig. 86. The dimensions (in centimetres) of this S})ecimen 
are : — 
Length of the portion of the rostrum preserved . 
„ „ mandible preserved . 
Width of premaxillary region 
„ rostrum at narrowest point . . . . 
Length of nasal opening 
Width of nasal opening 
1’ resented by t/w Egyptian Government, 1901. 
* In the description of this specimen given in Geol. Mag. [4J vol. viii. 1901, p. 444, the socket of this 
small additional tooth was overlooked. 
