100 Mr. D. M. S. Watson on the Nomenclature 



The OS innominatura, figui'ed Trans. Geol. Soc. ser. ii. 



vol. vii. pi. xsxiv. fi°:. 1 ; Phil. Trans, vol. 152. 



pi. xxiv. fig. 2; and Cat. Poss.Rep. S. Afr. pi. xxxvii. 



figs. 1 & 2. 

 The lower end of the hnmeruSj figured Trans. Geol. Soc. 



torn. cit. pi. xxxiv. fig. 4. 

 A femnr and tibia. 

 The series of caudal vertebrae figured by Owen in the Cat. 



Foss. Rep. S. Afr., -woodcut p. 74, fits into a block 



of matrix which itself fits the visceral surface of the 



pelvis mentioned above. 



The other Pariasaurian type-specimen in the Bain collec- 

 tion is Anthodon serrarhis recorded in the third manuscript 

 catalogue as follows : — 



45. Skull of a small species of Bluilcwater reptiles. A. Ver- 

 tebrae and dermal bones of ditto Avith scales. 

 Stylkrantz^ Sueuwberg, about 7000 feet above the sea. 



Another old Pariasaurian type is recorded in an extract 

 from W, G. Atherstone's note-book as follows : — 



^'Four miles from ^ Jan AVillem Fontein.' A few miles 

 further -we found another fossil, which the Boer's son had 

 discovered the evening before our arrival ; so we dug it out, 

 and found amongst other bones a perfect lower jaw and part 

 of the upper with 22 teeth, the upper overlapping the lower." 



This is the type of P. hombidens. 



The discovery of these type-specimens makes it necessary 

 to give new generic names to the large Pariasaurians of the 

 group. 



A brief generic diagnosis of such of the South-African 

 Pariasaurians as are represented in the British Museum is 

 given below : — 



Pariasaurus, Owen, 187(^. 



Medium-sized Pariasaurians, with an extensive armour of 

 very large pitted scutes with a central knob. Skull with 

 deep cheeks and pointed form. Sacrum of four vertebrae. 

 Centra very much constricted in the middle. Ilium much 

 inclined backwards, with the ventral border spread outwards. 

 Ischia very short. 



Type, P. serridens, Owen. Cisticephalns zone, U. Permian, 

 Bluikwater, Dist. Fort Beaufort, Cape Province. 



Type-specimen, cast of skull, part of lower jaw, pelvis. 



