174 LABYKINTHODONTIA. 



R. 505. A larger skull belonging either to the present or a closely 

 allied species ; from the Orange Free State. This speci- 

 men is much obscured by matrix, hut the sculpture is 

 shown on the mandibular rami. 



By exchange with the Blomfontein Museum,, 1884. 



Bothriceps (?) major (Owen 1 ). 

 Syn. Petrophryne (?) major, Owen 2 . 



Very imperfectly known. Of the approximate size of B. australis, 

 but with the skull apparently resembling that of B. huxleyi in 

 contour. 



Hob. South Africa. 



47340. Cast of a fragment of sandstone, containing impressions of 

 the dental series, with small portions of the contiguous 

 alveolar plate of the upper jaw. The original, which is 

 the type, was obtained from (? the Stormberg beds of) the 

 Karoo system of the Stormberg range, and is preserved in 

 the Museum of the Geological Society. It is described by 

 Owen in his ' Catalogue of the Fossil lieptilia of South 

 Africa,' pp. 68-69. Made in the Museum. 



Genus MICROPHOLIS, Huxley \ 



Syn. Petrophryne, Owen 4 . 



Skull approximating in contour to that of Bothriceps, but with a 

 pustular sculpture, and the interorbital bar frequently or always 

 narrower than the transverse diameter of the orbit, and the epiotic 

 cornua less produced. 



Although the sculpture of the upper cranial bones is not shown 

 in the type of M. stowei, Huxley 5 , there can be no doubt of the 

 generic identity of Petrophryne with Micropholis, as was first pointed 

 out by Zittel. 



Micropholis granulata (Owen 6 ). 



Syn. Petrophryne granulata, Owen 7 . 

 Micropholis granulata, Zittel 8 . 



The type of Petrophryne. Distinguished from M. stoivei by its 



1 Cat, Foss. Eept. S. Africa, p. 68 (1876).— Petrophryne. 2 Loc. cit. 



3 Quart. Journ. Greol. Soc. vol. xv. p. 649 (1859). 



* Cat. Foss. Eept. S. Africa, p. 67 (1876). 5 Loc. cit. 



6 Loc. cit. — Petrophryne. 7 Loc. cit. 



8 Hanclbuch der Palieontologie, 1 Abth. iii. Band, 2 Lief. p. 397 (1888). 



