286 RECENT DEPOSITS OF NERBUDDA VALLEY. 



the other having a greater transverse breadth than the last and 

 presenting in consequence a more triangular aspect. A few shells 

 of a third and larger variety occur about Birman Ghat but can 

 hardly be separated specifically from the smaller and more com- 

 mon form. 

 The annexed table exhibits the relative size of the most conspicuous 

 shells of these beds contrasted with recent examples of the same shells 

 the measurements being in inches and decimals, first across the long 

 axis of the shell, secondly across the short axis, and thirdly the thickness 



of bivalves, or in univalves Xhe maximum diameter of the body whorl. 



Melania tuberculata. Mull, 



Apex entire, whorls 11, 



Very fine from Bombay, 



Apical whorl eroded, whorls 10, ... 



Paludina Bengalensis. Lam., 



Large, 



Very large, from Benares, 



Paludina melanostoma. B., 



Unio marginalis. Lam., 



Unio corrguatus. Lam, Normal shape, 



Nerbudda variety, ... 



Unio coeruleus. Lea, large. 



small. 



Corbicula cor. Sow large 



Large var : from Birman Ghat, 



The only land shell noticed in the lower group was Bulimus insularis 

 Ehr. which occurs sparingly in the reddish clay, at the mouth of the 

 Baru-Rewa nulla near Sagwan Ghat. From this limited distribution 



Fossil. 



Becent 



1.17 



1.17 



0.34 



0.35 



• !• • ■ • 0*1 



1.40 







0.41 



1.57 



1.40 



1.15 



0.98 



... ■•• ••« 



2.05 





1.40 



1.15 



1.04 



0.90 



0.80 



4.12 



3.63 



1.84 



1.75 



1.25 



1.21 



2.37 



2.50 



1.60 



1.75 



1.10 



1.30 



2.20 



1.80 



1.80 



1.62 



1.40 



1.20 



2.49 



1.96 



1.25 



0.90 



1.00 



0.86 



1.49 





0.80 





0.50 





1.00 



0.85 



1.00 



0.71 



0.70 



0.48 



1.35 





1.20 





0.85 





