342 Dr. C. W. Andreivs — Expedition to the Fayum, Egypt. 

 The dimensions of the type-specimen (Fig. 1) are : — 



m. 3 

 m. 2 

 m. 1 

 p.m. 4 

 p.m. 3 

 p.m. 2 

 p.m. 1 

 c. 



Length. 

 37 mm. 

 37 „ 

 30 „ 



25 „ 



23 „ 



18 „ 



18 „ 



Total length of the molars ... 



Totallength of the premolars 



Total length of the cheek-teeth, including the canine . . . 



Another interesting new species is a large Creodont, the type- 

 specimen (Fig. 3) of which is the greater part of the right ramus of 

 a mandible, about the size of that of a large bear. The molars and 

 the last three premolars are in a perfect state of preservation, but 

 the first premolar, the canine, and two incisors are represented by 

 their empty alveoli only. Anteriorly the bone is complete, but 

 posteriorly it is broken off about an inch behind the last molar. The 

 symphysial region extended back to the level of the front of p.m. 3 

 (Fig. 3, s), and is very massive owing to the great size of the canines. 

 The ramus remains nearly the same depth throughout its length, 

 widening only very slightly beneath the hinder molars. The last 

 molar, which is the largest of the series, is a high-crowned cutting 

 tooth composed of two blade-like cusps and a small talon. The 

 posterior of the two cusps is the higher, and it bears a sharp keel- 

 like ridge on its postero-internal surface ; on the antero-external 

 surface of the anterior cusp there is a small tubercle which seems 

 to belong to the cingulum. M. 2 is similar, but has a larger talon 

 with a cutting edge. The first molar, which is the smallest of the 

 cheek-teeth, is also generally similar, except that the main cusps, 

 which are much worn, seem to be less compressed. P.m. 4, which 

 is much larger than m. 1, consists of a large conical, rather 

 backwardly directed main cusp, with a sharp keel-like cutting edge 

 on both its anterior and posterior borders ; behind this is a small 

 talon, and on the whole of the inner side of the tooth there i& 

 a fairly developed cingulum, which rises into a small cusp both in 

 front and behind. In p.m. 3 the main cusp is shorter and blunter 

 than in p.m. 4, and the talon is smaller. P.m. 2 consists of a single 

 cusp, the anterior border of which is much shorter than the posterior. 

 The first premolar is represented by a small alveolus only. 



The canine must have been very large, and was oval in section. 

 There were two incisors, which, in consequence of the large size of 

 the canine, do not stand side by side in the usual manner, but are 

 placed one above the other in a vertical plane. 



There are two large foramina on the jaw, one beneath p.m. 4, the 

 other beneath p.m. 3. In addition to these there are also two small 

 nutrient foramina in the inflated sides of the canine alveolus. 



The dimensions of this specimen (Fig. 3) are : — 



