A DESCRIPTION 



OF THE 



FOSSIL EOHINOIDEA 



OF 



WESTERN BIND. 



Fasciculus 5.— THE GAJ SEEIES (MIOCENE). 



Plates XLIV.-LV. 



I. Introductory Bemarks on the Gdj Series. 



The general relations of the Gaj series of Tertiary rocks of Western Sind were stated 

 in the first part of this work, in the introductory remarks upon the positions whence 

 the fossil Echinoidea of Sind were derived. An abstract was given of the nature of 

 the succession of the Gaj series and also of the Nari series below and the Manchhar 

 series above it. 



This stratigraphical information was derived from the elaborate work ' On the 

 Geology of Western Sind,' from the Memoirs of the Geological Sui'vey of India, by 

 W. T. Blanford, F.E.S.*, Deputy Superintendent of the Geological Survey. The 

 survey of the area was the joint labour of Messrs. Blanford and Fed den, and the 

 fossils which were collected under the superintendence of those gentlemen were sent 

 to us from H. B. Medlicott, Esq., F.K.S., the Superintendent of the Geological 

 Survey of India. 



Geologists will find the descriptions of the strata and the physical geology of 

 Western Sind, given in the memoir just noticed, full of interest, as illustra,ting the 

 varied features of the very wonderful series of Tertiary deposits in Western India. 



This memoir has been, moreover, carefully considered in the ' Manual of the 

 Geology of India,' by Messrs. Medlicott and Blanford, 1879. 



* Memoirs of the Geological Survey of India, vol. xvii. pt. 1 (1879). 



2p 



