FROM THE KARROO BEDS OF SOUTH AFRICA. 



667 



and rounded, and with small serrations on the posterior side of 

 the upper portions of the ci'owns. Manifestly the genus is allied 

 to Pristerodon and to Emydops, and also to Dia'lurodon , but it 

 seems wisest to make a new genus for those forms with three or 

 four slender posteriorly serrated teeth. Pristerodon has a larger 

 number of molars — 6, 7, or 8 — and they are robust teeth. 

 Emydops has a few teeth which are apparently not serrated. 

 Dkelurodon has a number of molars which have serrations both 

 in front and behind. 



Emijdojjsis irigoiiiceps (Broom) may be taken as the type 

 species of the new genus. 



Emydopsis longus, sp. n. (Text-fig. 42.) 



This species is founded on a collection of eight good and a 

 number of imperfect skulls found by me at Biesjespoort. They 

 occur in exactly the same horizon as Dicynodon sollasi. As most 

 of the skulls are about 2| inches in length, and no one is more 

 than 2| inches, we may safely conclude that they are adult 

 skulls. 



Text-fi2-ure 42. 



Skulls of JSmydopsis lonqus Broom. 

 " A. Type skull. 

 B. Skull of a topotype illustrating the variability of the prepavietal. 



The snout is very appreciably shorter than the antero-posterior 

 diameter of the orbit. It is above rounded and moderately 

 smooth, though the nasal bones are uniformly thickened. The 

 septom axillary does not seem to be seen on the face, though it is 

 impossible to be quite certain. 



