﻿608 MR. L. V. DALTON" OUT THE [NoV. I908, 



less than 10° near the crest. At Padoukbin village marls crop out ; 

 these pass north-westwards under petroliferous sandstone, and this 

 again under a hard fossiliferous sandstone, which extends along the 

 crest to a point some 2| miles from Padoukbin, north-westwards, 

 where the marls again crop out. Prom this place the crest steadily 

 rises towards the nummulitic-limestone hills indicated by Theobald 

 as some 10 miles distant, the dips converging to the south-east, 

 and bringing in successively-lower horizons. 



Two fossiliferous horizons were met with, cropping out below the 

 oil-sand of the Padoukbin native wells, and therefore in Dr. Noetling's 

 ' Prome Stage.' The lower of these is found on the Yenanine choung- 

 (choung = stream), a northern tributary of the Pwon choung, 

 about a mile west of Banbyin village, where a sandstone some 

 30 feet thick saturated with petroleum was found to contain Turri- 

 tella acuticarinata, Dunk, and Voluta (?) hirmanica, sp. nov. About 

 100 feet above this, on the Pwon choung half a mile from Banbyin, 

 was found a thin sandstone in the marls, containing Balanus tin- 

 tinnabidum, Linn. This appears to correspond approximately with 

 an horizon in the marls about half a mile north-west of Padoukbin,. 

 whence was collected Lucina glohulosa, Desh. and a Venerid form 

 somewhat resembling the recent Chione raarmorata, Lamk., with 

 casts of Natica, etc. Some 150 feet above these horizons occurs 

 the fossiliferous sandstone already mentioned, the fossils from 

 which are unfortunately too poorly preserved for accurate determi- 

 nation, although from one locality a mile and a half north-west of 

 Padoukbin a species of Conus, and from the same sandstone half a 

 mile south of Banbyin a poorly-preserved Ceratotrochus (possibly 

 C. AlcocJcianus), were obtained. This horizon, from its position 

 relative to the petroliferous sands, probably corresponds to the zone 

 of Cytherea erycina, Pav.^ ; and the shales immediately above this, 

 horizon furnished, near the Padoukbin oil-workings, Disiorsio 

 cancellinus, Roissy, with a cast possibly referable to Calliostoma 

 Blanfordi, J^oetl., and fragments of a small Terebra and a Natica. 

 C. BlanfordA and Terebra Smithi^ Mart., occur in the zone of 

 Cancellaria Martiniana at Minbu,^ but the evidence is too slender 

 for identification of the horizon. On the ISTgalaing choung, a 

 mile north-west by north of this spot, and half a mile east of 

 Ngalaingyoung village, a soft greenish sandstone in the clays 

 contained a fragment of a tooth, possibly referable to Carcharias 

 gangeticuSj M. & H., also found in the zone above mentioned. The 

 remaining fossils come from three different localities, but all appa- 

 rently belong to the same palseontological horizon. About three 

 quarters of a mile south-east of the outcrop of the supposed zone 

 of Cytherea erycina, south of Banbyin, a greenish sandstone was 

 found containing a poorly-preserved species of Area. Prom 

 road-metal from the quarry at Noathe, which is on the strike of 

 this bed, the following fossils were obtained : — Dosinia protoju- 

 venilis, Noeti., Mactra protoreevesii (?) Noetl., and Corhula socialis^ 



^ r. Noetling, Paljeontologia Indica (Mem. Geol. Surv. India) vol. i, no. 3- 

 (1901) pp. 7, 10. 2 25^-^^ pp. 27, 28. 



