12 



THE FOSSIL CORALS AND 



some ill-marked impressions, probably due to fucoids, have been found in the sandstones 

 themselves. There appears a probability that these sandstones may be of fiuviatile and 

 not of marine origin, 



" In the limestones tovv^ards the base of the Nari group many marine fossils have 

 been obtained, the following being some of the more important : — 



Gasteeopoda. 



Terebellum obtusum. 

 Cyprsea nasuta. 

 Voluta jugosa. 



dentata. 



Triton Davidsoni. 

 Natica patula. 



Corbula Harpa. 

 Pecten Labadyei. 

 Venus granosa. 



Schizaster Beluchistanensis. 

 Eupatagus rostratus. 

 Eehinolampas, sp. 



Trochocyatbus Burnesi. 



Nummulites Garansensis. 

 sublsBTigata. 



Natica sigaretina. 

 Siliquaria G-ranti. 

 Solarium affine. 

 Trochus cumulans. 

 Phasianella Oweni. 



Lamellibranchuta. 



ECHIJSrODEEMATA. 



Anthozoa. 



FOKAMINIFEKA. 



Cardium triforme. 

 Ostrea flabellula. 



Clypeaster profundus. 

 Coelopleurus Forbesi. 

 Cidaris Verneuilli. 



Montlivaltia Vignei. 



Orbitoides papyracea. 



" Although some species pass from the Khirthar and even from the Eanikot group 

 into the Nari beds, the fauna is chiefly distinct, and marks a higher horizon^ The 

 'most marked change is, perhaps, in the Foraminifera, because they are so abundant 

 and characteristic— whole beds of limestone towards the base of the Nari group being 

 entirely made up oi Nwmmulites Garansensis, N. suhlcevigata, and Orbitoides papyracea, 

 the last-named frequently of large size, some specimens being two or three inches 

 in diameter ; yet every species is distinct from those occurring in the Khirthar group. 

 One of these species of Nummulites, N. Garansensis, is of importance, because it occurs 

 in Europe, as in Sind, in the highest strata characterized by the abundance of the 

 genus, those beds being at the base of the Miocene. Nummulites suhlcevigata is 

 peculiar, so far as is known, to India. 



" Several of the Mollusca and Echinodermata of the Nari beds also, such as Siliquaria 

 Granti, Solarium affine, Venus granosa, and Clypeaster profundus, show distinctly 

 Miocene affinities, and some of these pass up into the Gaj group. But at the same 

 time there are so many Eocene forms present, such as Natica patula, N. sigaretina, 

 Ostrea fiahellula, Voluta jugosa. Sec, that it is somewhat difficult to decide to which 

 subdivision the Nari beds should be assigned. They may, perhaps, occupy an inter- 

 mediate position, similar to that of the Oligocene of continental geologists. 



