1854.] HISLOP AND HUNTER — GEOLOGY OF NAGPUR. 473 



3, Red shales, 50 feet thick, and green shales, 30 feet. In the 

 former of these there were observed at Korhadi 



Reptilian foot-tracks. 

 Worm-tracks. 

 Phyllotheca ? 



4. White and coloured limestones and marbles (dolomitic), with 

 chert. Not less than 100 feet thick. 



In Southern India these limestones (No. 4) are 300 feet thick, 

 and are succeeded by another series of sandstone, termed b)'^ Dr. Carter 

 the " Tara sandstone." 



All these sandstones, shales and marbles are much disturbed and 

 often changed by the plutonic rocks in the district treated of in this 

 memoir. Beyond the Nagpur district to the N.W. at Chota Barkoi, 

 according to Lieut. Sankey *, the sandstone proper is succeeded down- 

 wards by 



Bituminous shales, with fossils ; and 



Sandstone ; 

 and at another locality, near the foot of the Pachmahari Hills, by 



Indurated clay-stone. 



Green shale. 



Bituminous shale, with fossils. 



Mr. Hislcp compares this sandstone formation with the sections 

 of the neighbouring regions published by Newboldf and Malcolmson % 

 and supplied to him by Dr. Bell, and he finds that often the posi- 

 tion of the shale with reference to the limestone seems to vary ; and 

 that these shales, sandstones, and limestones appear (from Dr. Bell's 

 Sections) to be interstratified at Kota to the S.E., where the shale 

 and limestone have yielded fossil fish of the genera Lepidotus and 

 ^chmodus, associated with plants and Teleosaurian remains §. 



From a general consideration of the character and fossils of the 

 sandstone formation, the authors regard it as lacustrine in origin, like 

 the Bengal coal-field, and of the Lower Jurassic age. 



The metam Orphic and plutonic rocks are also noticed in detail. 

 The latter probably belong to several epochs; and the authors consider 

 it probable, that, whilst one granitic outburst raised and broke up 

 the old sandstones previously to the formation of the tertiary fresh- 

 water deposits, the pegmatite of Nagpur was protruded at a date even 

 subsequent to that of the traps which had covered and again disturbed 

 these lacustrine beds. 



5. Description of the Cranium of a Labyrinthodont 

 Reptile (Brachyops laticeps) from Mangali, Central 

 India. By Prof. Owen, F.R.S., F.G.S. 



[Abstract.] 



This fossil was obtained by the Rev. Messrs. Hislop and Hunter 

 in the sandstone at Mangali, about sixty miles south of Nagpur, 



* Quart. Journ. Geol. Soc. vol. x. p. 55. f Journ. As. Soc. vol. viii. p. 167. 

 + Trans. Geol. Soc. 2 ser. vol. v. p. 541 et seg. 

 § Quart. Journ. Geol. Soc. vol. viii. p. 233. 



2 K 2 



