Vol. 70.] VERTEBRATES FROM BRITISH EAST AFRICA. 179 



outer face of the bone — the larger a little anterior to pm., the 

 other beneath pm 3 . 



The teeth preserved are an incisor (fig. 1 a, i.), apparently the 

 outer one, the canine (c), and two premolars (pm 3 , pm x ), the 

 small pm 2 being represented by its root only. The incisor has 

 its crown strongly compressed from side to side towards its base, 

 while the summit forms a backwardly curved hastate point. The 

 canine is not very big; its inner face is nearly flat, and is 

 separated from the strongly convex anterior and outer face by 

 well-defined ridges, the hinder of these forming the sharp posterior 

 edge of the tooth, which is finely crenulated from the base nearly 

 to the point. Behind the canine is a diastema, in which the upper 

 border of the jaw rises towards the front ; behind this, again, is the 

 root of the small compressed pm 2 , which in turn is separated by 

 a short interval from pm 3 . Pm 3 consists of a high, laterally 

 compressed, anterior cusp, behind which and towards the outer 

 side of the tooth is a small tubercle surrounded jDOsteriorly and 

 internally by a strongly developed cingulum. Pm 4 is a con- 

 siderably bigger tooth ; it consists of a large central cusp, much 

 compressed and having sharp anterior and posterior edges, a small 

 blunt anterior tubercle, and a compressed posterior cusp, the 

 cutting-edge of which is in line with the edge of the main cusp, 

 from which it is separated by a sharp notch ; behind this is a 

 small talon formed by the cingulum. 



This mandible seems to have belonged to a feline Carnivore, 

 nearly related probably to Pseud celurns or JElvrictis. From 

 JElurictis it is distinguished by the absence of a sharp angulation 

 of the chin, the smaller size of prn , and its greater distance from 

 the canine in front and from pm 3 behind. From Psemlcelurus it is 

 distinguished by the somewhat greater depth of the chin and the 

 greater length of the diastema between the canine and the second 

 premolar. There is, however, in the British Museum- collection a 

 mandible referred to Pseudcelurus in which these differences are 

 not very great, and the present specimen may be provisionally 

 referred to that genus under the name of Pseud&lurus afri- 

 canus, sp. nov. 



The dimensions (in centimetres) of this specimen are: — 



Length, so far as preserved 5*7 



Depth of symphysis at canine 2*6 



Depth of ramus beneath pm , 2 - l 



Distance between canine and pm., 2*0 



Length of pm 3 1*1 



Width of pm, 0'5 



Length of pm 4 1 - 4 



Widthofpm 4 0-6 



The left astragalus (PI. XXIX, fig. 2) of a Carnivore, about 

 as big as a lion, presents some peculiar features. The specimen, 

 which is from Bed 31 at Kachuku, is considerably abraded at the 

 edges, but shows the chief characters very well. The surface 

 for the tibia is oblique, and but slightly ccncave from side to 



