INTRODUCTION. - 



The view of the Miocene character of this fauna is further corro- 

 borated by other facts. I stated above that the fauna here described 

 is considerably higher up in the series than the beds with Velates 

 schmideliana, Chemn., and as the latter must be considered as a 

 characteristic fossil of the Khirthar group, it is, a priori, reasonable 

 that the strata in which this fauna has been found might be correlated 

 to either the Nari or Gaj groups of India. 



Now we find, in going through the above list, that there are five 

 species from the Nari group, and five species from the Gaj group, and 

 one species occurring in both ; if we were to decide from mere 

 statistics, the question would be difficult to solve, inasmuch as the 

 evidence is equal on both sides. But if we consider that there are 

 seven recent species, and that those found in Java have been found in 

 strata which are equivalent to the Gaj group in India, I think the 

 balance turns rather in favour of the Gaj than of the Nari group. 

 Until further proof be given to the contrary, I am of opinion there- 

 fore that the series above the petroleum-bearing sands, up to the 

 ferruginous conglomerate of Yenangyoung, and represented by the 

 fauna from Minbu and Yenangyat, may be correlated with the Gaj 

 group of Western India. 



A few words remain to be said about the species foreign to the 

 Indian tertiaries, which have been found in the fauna of Yenangyat 

 and Minbu ; there is only one species Terebra fuscata, Brocch which 

 could be identified with a species from the European tertiary but 

 seven are identical with species which occur in the Miocene of Java 

 Deducting these eight species from the total, and further allowing 

 for the two species of Corals } which as far as is known for the present 

 have not been found in India, there remain therefore 18 species 

 which the tertiary beds at Yenangyat and Minbu share with those 

 in Western India. This is rather remarkable, considering that the 

 tertiary beds in Java are much nearer to those in Burma than the 

 latter to the tertiaries of Western India. It would, however be too 

 rash to form any conclusion from this, or to accept it as an unshake- 

 able fact, inasmuch as the examination of the rich fauna from Lower 



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