146 



LABYRINTHODONTIA, 



(clavicle) of the thoracic buckler. The original, which is 

 the type, was obtained from the Denwa group of the Gond- 

 wanas, on the Denwa river, Satpura district, Central 

 Provinces, and is preserved in the Indian Museum, Cal- 

 cutta. It is figured by the writer in the ' Palaeontologia 

 Indica, ' ser. 4, vol. i. pt. 3, pi. vi. fig. 8, as a Crocodilian 

 scuta, and in pt. 5, p. 30, fig. 2 of the same as a supra- 

 temporal of Mastodonsaurus. Since the date of the latter 

 figure a cast has been submitted to Dr. E. Fraas, of Munich, 

 who has compared it with the thoracic buckler of M. 

 giganteus, and states that it agrees so closely as to leave 

 no doubt that it indicates an allied species. The specimen 



Fk 33. 



Mastodonsaurus indicus.- — Part of the right lateral thoracic plate ; from the 

 Denwa stage of the Gondwanas of Central India. ^. (From the ' Palseonto- 

 logia Indica.') 



is represented in fig. 33 ; the upper part of the border 

 sloping away from the superior angle is part of tho exter- 

 nal natural border of the plate ; the postero-external 

 angle of the specimen being part of the region from which 

 the posterior clavicular process projected. 



Made in the Museum, 1885. 



