326 Reports and Proceedings. 



3. '' On a Eaised Beacli at Portland Bill, Dorset." By W. Whit- 

 aker, Esq., B.A., F.G.S. 



The author stated that a deposit of shingle occurs upon the cliffs 

 of the south-east part of the isle of Portland, extending from Cave 

 Hole to the Bill. At the former place it is from 30 to 40 feet above 

 the sea, and is capped by a considerable thickness of angular "head." 

 Further south there is less of the "head." The shingle consists of 

 pebbles of limestone, flint, and chert; and the deposit contains 

 shells of Littorina Uttorea and littoralis, Patella vulgata, and other 

 species. Near the beacon these species, with Purpura lapillus, occur. 

 To the west of the Bill the shingle is partly covered by a yellowish- 

 brown loam, containing land and freshwater shells, such as Bythinice 

 and Pupce. 



Discussion. — Sir Charles Lyell could not entertain a doubt as to tMs being a true 

 raised beacb. He bad foujad in it more species of sbells tbat tbose mentioned. He 

 tbougbt that the existence of this beach, proving an elevation of the land, ought to be 

 taken into account in any theory as to the origin of the Chesil Bank. 



Mr. Prestwicb mentioned that at one spot the number of young shells in the raised 

 beach was remarkably great as compared with that of older shells. 



Mr. Whitaker was inclined to regard this beach as of the same date as that at 

 Torquay, with which it is about on the same level. Its absence at intermediate por- 

 tions of the coast showed that there had been time for considerable changes along the 

 coast since its deposition. 



4. " On the occuri-ence of Terehratula dipJiya in the Alps of the 

 Oanton de Vaud." By E. Tawney, Esq., F.G.S., with a Note by T. 

 Davidson, Esq., E.E.S., F.G.S. 



The author recorded the occurrence of Terebrafula dipJiya in a 

 block of Oxfordian limestone derived from the ridge of the Vanil 

 Noir, near Paray Charbon. No Neocomian beds occur within a dis- 

 tance of several miles. The block had merely fallen, and had not 

 been transported. The author indicated that this result is in opposi- 

 tion to the views of M. Hebert, who maintains the identity of T. 

 dipJiya and T. dipliyoides, and refers all the beds containing these 

 fossils to the Neocomian series. 



Mr. Davidson, in his note, indicated the distinctive characters of 

 T. viator, Pict. (=diphya) and T. dipliyoides, and confirmed the 

 author's opinion as to its Jurassic age. 



Discussion. — Mr. J. "W. Judd thought that the break that usually existed between 

 the Neocomian and Jurassic beds proved tbat there must have been intermediate 

 marine deposits, and that some beds in the Carpathians were rightly attributed to the 

 intermediate age. Possibly, therefore, diphyoid Terebratuke, commencing in the 

 Jm-assic and continuing in the Tithonian, still lived on in the Neocomian period. 



5. " On a new Labyrinthodont from Bradford." By T. H. Hux- 

 ley, LL.D., F.E.S., President, with a Note on its locality and strati- 

 graphical position, by Louis C. Miall, Esq. 



The Labyrinthodont nature of this fossil was said to be proved by 

 the characters of the vertebrte, ribs, and ventral armour. It exhibits 

 portions of both jaws, which bear close-set teeth of nearly equal size, 

 nearly circular in section, and slightly recurved at the apex, which 

 is obtusely pointed. The surface of the upper jaw shows a pitted 

 sculpture. The ventral armour consists of oval plates, traversed ob- 

 liquely by a convex ridge, dividing them into two unequal parts. 



