NEW FOSSIL REPTILES. 867 



parietal foramen, which is only about 1 mm. in diameter. This 

 is the more remarkable in that in E. uniseries the foramen 

 measures nearly 20 mm. in diameter. 



The zygomatic arch is very massive. The malar process of the 

 jugal is less mai-ked than in the smaller species. The squamosal 

 extends forwards to below the postorbital arch. Anteriorly the 

 zygomatic arch measures 65 mm. in depth and posteriorly 

 80 mm. 



The lower jaw is veiy powerful and measures 400 mm. in 

 greatest length. 



*Endothiodon platyceps, sp. n. (PI. XCIII. fig. 19.) 



This new species was also discovered by Mr. Whaits, near 

 Beaufort West. It is founded on a fairly complete but slightly 

 crushed and probably barely mature skull. The lower jaw is 

 complete, and the only important part missing from the skull is 

 the whole of the nasal region and the anterior part of the 

 frontal. 



The greatest length of the skull is 275 mm., and the greatest 

 width about 215 mm. 



The frontal region is flat, and the parietal crest instead of 

 rising up from this is continued straight back. There does not 

 appear to be a distinct postfrontal bone. The preparietal is large 

 and passes forwards for 35 mm. in front of the pineal foramen. 

 The foramen is 14 mm. wide and 8 mm. in antero-posterior 

 dikmeter. Behind it is a large boss formed by the preparietal. 

 There is nothing particularly noteworthy about the squamosals, 

 jugals, or occiput. 



The dentition is better seen in the lower than in the upper 

 jaw. It is made up of a series of 7 teeth in a fairly regular row. 

 Behind this the same row has 9 more teeth, but median to these 

 there appear others, so that the front half of the dentition is an 

 irregular single row, the back half an irregular double row. 

 Parts of the crowns of two teeth are preserved and there appear 

 to be no serrations on them. If this prove to be the case, this 

 species will require to be placed in a new genus, as Enclothiodon 

 hathystoma has the teeth markedly serrated in front and behind. 



The lower jaw is pointed in front, but at the lower part of the 

 symphysis it is very broad. The back part of the dentary is 

 unusually slender. Endothiodon platyceps differs from E. uniseries 

 and E. ivhaitsi in the double row of teeth behind and also in the 

 flat broad head ; while from E. hathystoma it difiers even more 

 markedly. The teeth are smaller than in the other species. 



Prodicynodon beaufortensis, sp. n. (PI. XCIII. fig. 21.) 



This small species is founded on an imperfect skull obtained by 

 me at Kuilspoort at about the same horizon at which Taognathus 

 megalodon was found. The specimen consists of the crushed ant- 

 orbital portion of a small skull with the front two-thirds of the 



* See also Addendxran, p. 875. 



