1854.] HISLOP AND HUNTER — GEOLOGY OF NAGPUR. 471 



Occasionally it appears to be repeated more than once in the escarp- 

 ments of the trap hills. 



This thin deposit has an enormous range ; it has been traced more 

 or less interruptedly to a distance of 1050 miles in a direct line, from 

 Rajmahal (on the Ganges) to Bombay, and of 660 miles from the 

 N, to the neighbourhood of Padpangali, near the mouth of the 

 Godaveri. 



From the collections made by Messrs. Hislop and Hunter and 

 their friends from this deposit *, the authors mention the following 

 fossils : — 



Small bones, probably Reptilian. 



Remains of a freshwater Tortoise. 



Fish-scales, both Cycloid and Ganoid, in great numbers. 



Insects, found at Takli : Mr. Hunter enumerates about ten species 



of Coleoptera. 

 Entomostracans ; five or six species of Cypris. 

 Mollusca, land and freshwater, in great numbers. The following 

 genera are enumei'ated : — 



Bulimus. Paludina. 



Succinea. Valvata. 



Physa. Limnseus (Camptoceras) . 



Melania. Unio. 



Plant remains : Mr. Hunter enumerates 



Fruits and Seeds, about fifty species. 

 Leaves, exogenous, six forms. 



, endogenous, three or four. 



Stems, exogenous, few species ; some specimens six feet in 

 girth. 



, endogenous. 



Roots, six or seven kinds. 

 Chara, seed-vessels. 

 Of the age of this deposit it is difficult to speak. The flora appears 

 to have some resemblance to that of the London Clay. With two 

 exceptions, all the species of the Molluscs are extinct ; and two of 

 the genera {Valvata and Physa) have disappeared from the plains 

 of Central and Southern India; whilst the 'Planorhis and Ampul laria, 

 now so common in India, are altogether absent from this deposit. 

 As an isolated and probably lacustrine formation, though evidently 

 possessing a high antiquity as compared with the superficial deposits 

 of the district, its age cannot at present be predicated with any 

 certainty. 



The underlying or vesicular trap is 100 feet thick in the Sitdbaldi 

 hill ; but it dies out towards Tiikli, where the freshwater bed rests 

 on the sandstone. Near Nagpur, Mr. Hislop observes, this lower 

 trap appears to have been forced up beneath the overlying mass of 

 freshwater deposit and upper trap, and to have cither filled up and 



* An extensive series of organic remains and of rock-specimens, from this 

 deposit, the fossiliferous sandstone, and other formations, has heen presented to 

 the Society by Messrs. Hislop and Hunter. The fossils, however, have not yet been 

 worked out. 



VOL. X. PART I. - K 



