— 153 — 



as in Bracliyops (loc. cit. fig. 1, 2, 2) and PetvopJirijne 

 (fig. 4, 22), it may then be deemed desirable to further 

 investigate the locality of its imbedding. 



M. Pierre Mikhailovitch Yasikov^ in his supplementary 

 Letter to Fischer de Waldheim's Memoir, writes: — «Le 

 № 16, Crâne du EMnosaurus Jasikovii, Fisch, quoique 

 découvert dans le gouvernement de Simbirsk, est sans 

 indication précise de localité.» (loc. cit. p. 14). 



The skull of Petrophryne granulata was discovered 

 in a lacustrine sand-stone formation, not Liter than 'tri- 

 assic, possibly of 'permian age, at the 'Tafelberg', Cape 

 of Good Hope. The sandstone series of Mangali, Central 

 India, are of Permian age. I am not cognizant of any 

 Labyrinthodont in Jurassic strata, unless Rhinosaurus be 

 proved to be bicondyloid, and also to have been deri- 

 ved from the same Jurassic series as the Ichtyosaurian 

 fossils described by His Excellency Fischer de Waldheim. 



