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10. Investigations in South African Fossil Reptiles and Amphibia 

 (Parts 1-4). By S. H. HAUGHTON, B.A., F.G.S., Assistant 

 Director. 



1. On a New Species of Trematosaurus (T. sobeiji). 

 (Plates VIII., IX.) 



THE remarkably fine skull upon which the following observations 

 are based was recently presented to the South African Museum 

 by Messrs. Sobey Bros, through the medium of the Queenstown 

 Municipal Authorities. It was found in the building-stone quarries 

 belonging to these gentlemen, and when received at the Museum 

 the top had been wholly freed from matrix. The palate was em- 

 bedded in a slab of hard, homogeneous calcified sandstone, and the 

 occipital condyle had been broken off, and has not been recovered. 

 I have cleaned one side of the palate to show the sutures between 

 the bones. In doing so the skull fractured across in three places, 

 and thereby enabled some knowledge of the relations of the median 

 bones to be obtained. The skull obviously belongs to a hitherto 

 undescribed species, and I have pleasure in naming it after the 

 donors. 



The skull is large, triangular in outline, the snout gradually taper- 

 ing. The nostrils are oval in shape, approximate, some distance 

 behind point of snout. Orbits are small, placed midway between 

 front and back of skull. The snout is rugose. The sculpturing 

 of the cranial bones is of the usual Labyrinthodont type, pitted at 

 the centre with radiating grooves at the periphery. The supra- 

 squamosal, postfrontal, and postorbital are relatively less grooved and 

 more pitted than the other bones. 



The chief measurements of the skull are as follows : 



Greatest length along border 517mm. 



Greatest breadth 305 ,, 



Tip of snout to occipital plate 411 ,, 



Snout to plane of front of nostril 65 ,, 



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