318 Geological Society : — 



berg Beds, the Red Beds, shales and sandstones of a red colour, the 

 Cave Sandstone, a massive, fine-grained bed 150 feet thick, wea- 

 thering white, and the bedded amygdaloidal lava-flows and tuffs 

 that cap the whole, were but briefly noticed, as but few opportunities 

 had offered for examining them. 



Some petrological details were given of the contemporaneous and 

 intrusive traps, all appearing to contain the same constituents as the 

 overlying subaerial traps, and doubtless belonging to the same series 

 of volcanic outbursts. 



The author proceeded to review the lie of the rocks and physical 

 structure of the country, distinguishing between the area of older 

 rocks near the coast and the later deposits commencing with the 

 Dwyka Conglomerate of the interior. There was apparently uncon- 

 formity at the base of this conglomerate ; it and the overlying Ecca 

 Beds were thrown into folds and occupied the Karoo plains, whilst 

 the ranges to the northward were formed of the higher beds, all 

 nearly horizontal and resting quite unconformably on the Ecca Beds. 

 These ranges had been carved out by denudation, which had removed 

 the Molteno, Karoo, and Stormberg Beds to the south and north. 

 The view advocated by Mr. Dunn that the Kimberley Beds north of 

 the ranges represented the Ecca Beds to the south was discussed, 

 and the author gave reasons for dissenting from it, and classing the 

 Kimberley Beds as a higher subdivision. 



Some notes on more recent formations, the conglomerates of Oli- 

 phants river and superficial deposits, were followed by a summary of 

 the author's conclusions as to the probable geological history of 

 South Africa. The Bokkeveldt Beds are shown by their fossils to 

 be marine, and possibly all the formations up to the Zuurberg Quart- 

 zite may be also marine. The Ecca Beds have yielded no fossils 

 which would enable us to decide whether they are marine or fresh- 

 water ; the Kimberley, Karoo, and Stormberg Beds are looked upon 

 as lacustrine. 



" On Two New Lepidotoid Ganoids from the early Mesozoic 

 Deposits of Orange Free State, South Africa." By A. Smith Wood- 

 ward, Esq., F.G.S. 



February 8.— Prof. J. W. Judd, F.R.S., President, in the Chair. 



The following communications were read : — 



1. " On some Remains of Squatina Cranei, sp. nov., and the 

 Mandible of Belonostomus cinctus, from the Chalk of Sussex, pre- 

 served in the Collection of Henry Willett, Esq., F.G.S., Brighton 

 Museum." By A. Smith Woodward, Esq., F.G.S. 



2. "On the History and Characters of the Genus Septastrcea, 

 D'Orbigny (1849), and the Identity of its Type Species with that of 

 Glyphastrcea, Duncan (1887)." By George Jennings Hinde, Ph.D 



F.G.S. 



