FROM THE KARROO BEDS OF SOUTH AFRICA. 



669 



The frontal is very long and narrow, and remarkable in that 

 the postorbital portion is wider than the orbital. The preparietal 

 is almost nniqne among Anomodonts in being very small and 

 situated entirely in front of the pineal foramen. A similar 

 condition is only known to occur in Umydopsis arciatus (Owen). 

 The postfrontal is either entirely absent or does not appear on 

 the surface. The postorbital is very large, and extending forward 

 into the region usually occupied by the postfrontal, forms a con- 

 siderable part of the orbital margin. The parietal is moderately 

 wide but short, the part behind the pineal foramen being 

 exti-emely short. The pineal foramen is very small. 



In the lower jaw the dentary resembles that of Umi/dojjsis 

 lo7igus, but the post-dentary portion of the jaw is relatively much 

 shorter. 



The following are the principal measurements of the skull : — 



Greatest length about 60 mm. 



Greatest width doubtfully about 50 ,, 



Interorbital width 10. ,, 



Intertemporal width 17 ,, 



Between caniniform processes 11 ,, 



Basal length about 48 ,, 



Text-fia"ui-e 43. 



aiiwW of Emj/dops pm'vus Hivom. 



The skull is sliglitlj' crushed, hut could not well have heeu lougev than 

 indicated hy the dotted line. 



Emydops parvus, sp. n. (Text-fig. 43.) 



Until the discovery of the present s-pecimen, Um yd ops minor 

 was the smallest known Anomodont, but this new find gives us a 

 type which has certainly a shorter skull and possibly smaller in 

 other respects. This new species is founded on a skull discovered 

 by me at Bruintjeshoogte in the same stratum as yielded the 

 type skull of Ictidosuchus longiceps Broom. 



The skull is Ig inches long and rather less in breadth, and the 

 whole animal was probably as small as a newly-born kitten. 



