﻿Vol. 64.] 



GEOLO&Y OF BUKMA. 



607 



It is evident that some modification of the foregoing classifi- 

 cation is desirable, in view of the later evidence brought forward 

 as to the ages of the lower members of the succession ; these changes 

 may be more fitly suggested in § III, when considering the general 

 results of the study of the various sections now to be described. 



The additional information contained in the sequel relates to the 

 Pegu and Bassein divisions of the Arakan Series, new localities of 

 the former having been visited, while numerous fossils from the 

 latter are for the first time described. 



II. Original Observations. 



{a) Thayetmyo District. (Map^ fig. 1^ below.) 



Some 8 miles west-north-west of Thayetmyo lies the village of 

 Padoukbin : near this locality the Burmah Oil Company are working 

 the petroleum of the lower part of the Pegu Division, the rocks of 



Fig. 1. — STcetch-map of the Padoukbin district. 



\ 



^T.acuticarinata j 



Onmadon S y — \ „ CV 



J^ U kj Banbyiu ^ \ 









^ 



■^-^N^^ ^ oNffgilamgyoung 



c 



PV / 



'^^ f 



t 



\\ ^3k^_/\ 

 \ V>^ \ xL.globulosa 





Scale: i inch =2 miles. XV oPadoukbin 



1 Noatli^eo\ 1 



which are here bent into an anticlinal arch striking approximately 

 north-west and south-east, the dips on the north-eastern flank 

 being as a rule higher than those on the south-western, which are 



