dictxodontidj:. 25 



river. The type; figured by Owen in the 'Trans. Geol. 

 Soc' ser. 2, vol. vii. pis. xxix.-xxxii., and also in his ' Cata- 

 logue of the Fossil Keptilia of S. Africa,' pi. xxx. fig. 2, 

 pi. xxxi. fig. 1, pi. xxxii. fig. 1, and pi. xxxiii. In the view 

 of the palate given in the former memoir the maxillae are 

 lettered palatines (21) ; while in the latter the bar com- 

 prising the anterior extremity of the pterygoids and pala- 

 tine is lettered as the maxilla (20). The contour of the 

 orbits appears to be natural, but the effect of distortion 

 is shown by the left temporal fossa being wider than the 

 right. Presented by A. G. Bain, Esq., 1853. 



36238. An imperfect adult cranium ; from the Gonzia river. 



{Fig.) Figured by Owen in his ' Catalogue of the Fossil Eeptilia 

 of S. Africa/ pi. xxix., pi. xxx. fig. 1, pi. xxxi. fig. 2, and 

 pi. xxxiii. fig. 2, as D. baini, of which it may be regarded as 

 the type 7 . Although there are differences in the contour 

 of the temporal fossae and orbits, yet the present specimen 

 agrees so closely in general characters with the preceding 

 that there is every probability that the two belong to the 

 same species, and that the differences are due to the effects 

 of crushing and fracture. Thus it has been already men- 

 tioned that the preceding specimen is unsymmetrical ; 

 while in the present one it is evident that on the left side 

 the prefrontal has been thrust laterally over the lachrymal 

 region of the temporal arcade, by which the size of the 

 orbit has been reduced, and the position of the postorbital 

 bar altered. The slight lateral compression of the tusk 

 does not seem to be a feature of much importance. 



In Owen's ' Catalogue ' the locality of this specimen is 

 given as Fort Beaufort. 



Presented by A. G. Bain, Esq., 1853. 



R. 1660. The imperfect anterior portion of an adult cranium ; from 

 {Fig.) the Cape Colony. Figured by Seeley in the ' Phil. Trans.' 

 for 18S9, pi. xiii. This specimen is broken off im- 

 mediately behind the parietal foramen, and the extremity 

 of the muzzle is wanting. The boundaries of the various 

 bones on the frontal aspect are well shown, the small size 

 of the prefrontals and the position of the lachrymal 



1 There is no evidence to show that this cranium is specifically identical 

 ■with the fragment of a maxilla described in the ' Trans. Geol. Soc' foe. cit. 

 under the same name. 



