TWO XEW EEPTILES FKOM THE KAlflfOO JiEDS OF XATAL. 171 



and bears four incisors, a large canine, and probably three 

 small molars. Fortunately the incisors and canines have 

 been extracted from the matrix, so that their crowns can be 

 examined. The first incisor is 11* nnn. in height, 8 mm. at 

 the base from without in, and 5 mm. from side to side. On 

 passing upwards it curves slightly backwards like a bird's 

 claw, and ends in a somewhat obtuse point. Along each side 

 in the upper two thirds of the tooth runs a low ridge, which 

 curves with the tooth, but passes more to the inner side on 

 approaching the apex. On the front of the upper part of 

 the tooth are four faint ridges, and on the concave side are 

 also four ridges slightly more marked. There is no evidence 

 of any serrations on the tooth. The second, third, and fourth 

 teeth are apparently all similar to the first, Imt they are all 

 more or less worn, and the ridges less distinct. The teeth 

 decrease in size fi^om the first to the fourth. The fourth 

 measures 8 mm. in height. The four incisors measure 

 together "20 mm. The canine is large and very like the 

 incisors in structure. There is a feeble ridge in front and 

 behind, and on the concave side five faint ridges. No ridges 

 are seen on the outside of the tooth, but this may be due in 

 part to wear. The tooth measures in height probably 30 mm. 

 Antero-posterioi'ly it measures 11 nnn., and in the other 

 direction 10 mm. There are probably three molars, but only 

 two are preserved, the first close against the canine, and the 

 supposed third 16 mm. from the canine. Though the jaw is 

 probably pretty deep in front, it rajDidly becomes narrow, and 

 at the third molar it measures only 21 mm. 



The dental formula of the species is i|c-|-m|. This is 

 probably identical with the formula of the specimen des- 

 cribed from Cape Colony as Scymnosaurus ferox Broom, 

 and for this reason I have provisionally placed the Natal 

 specimen in the same genus. The differences in the dentition 

 are sufficiently great to make it a new genus if it were a 

 mammal, but it seems better in the meantime to make the 

 reptilian genera rather com])rehensive. 



It is unfortunate that the locality of the Cape specimen 



