4 



FAUNA OF BALUCHISTAN. 



seeking information with regard to the age and correlation of the Hemipneustes 

 beds, as they may be conveniently styled. The following table will show the geolo- 

 gical distribution of these 17 species :— 



From the above list it is unquestionable that the Hemipneustes beds of 

 Baluchistan are of Senonian age, representating the upper part or dtage Aturien 

 of that formation. 



The only question to be considered now would be, to which of the two subdivi- 

 sions of the Aturien, the lower or OampaniSn or the upper or Maestriohtien, the 

 Hemipneustes beds might be correlated. If such a specialization is admissible for 

 countries as far distant as Baluohistdn and Western Europe, the evidence is all more 

 in favour of the Macstrichtien than of the Oampanien, 



In fact, if we consider that the chief development of the genus Semipnemtea 

 takes place in the etage Maestrichtien, and if we further consider that the genus 



