2G6 PEOCEEDINGS OF THE GEOLOGICAL SOCIETY. [Jan. 8, 



8. Blue and cream -coloui*ed limestone, containing most of the 

 fossils found in bed No. 9 of the preceding section, as well 

 as a similar bone-bed. 



9. Sandj Lias, containing an abundance of Ostrea Uassica, 

 similar to bed No. 10 of Section I. 



10. Equivalent to bed No. 11 ; but that corresponding to 

 No. 12 is absent. 



11. Dark-coloured clay with sulphate of strontia. 



12. Gotham marble, containing Ostrea irregularis and Mytihs 

 minutus. 



Kear the water-works on Bedminster Down, the uppermost beds 

 resemble those of the Gotham sections ; but the author had not 

 found the Upper Plant-bed (No. 3 of Section I.). Bed No. 4, with 

 its fossils, and No. 5, with Ammonites planorhis &c., are represented 

 by less ferruginous and sandy beds. The fossils obtained, however, 

 were less numerous than at Gotham. The lower beds were not well 

 exposed. 



Several quarries at Keynsham afford good sections : one, about a 

 furlong from the village, exhibits the Bucklandi-series ; a second, 

 three-quarters of a mile from the village, shows the Planorbis-series 

 and Cypris-beds, with Lima gigantea, L. succincta, L. punctata, L. 

 tuberculata, casts of Littorince, &c. ; and Hill's Quarry affords a section 

 of the Planorbis-series and numerous belts of Lias. 



The author comes to the conclusion that the Sutton stone is a 

 Liassic rather than a Khsetic bed, — that the White Lias is repre- 

 sented by beds No. 2 to No. 11, inclusive, of Section No. I., while 

 the Sutton series includes No. 6 to No. 12, — and that the Planorbis- 

 zone and the Sutton series are subdivisions of the White Lias. 



Mr. Groom-Napier then gives the following descriptions of three 

 new species. 



1. AvicTJLA Sandersi, spcc. nov. 



Shell -i|- inch long by -^ in. broad ; thin and flat, with one rib 

 running diagonally across it. Surface smooth, subovate, with 

 fine yet very clearly defined concentric lines of growth ; umbones 

 slightly curved outwards. Locality Planorbis-bed, Gotham. One 

 specimen only. This I have named after my friend Mr. WiUiam 

 Sanders, F.R.S., F.G.S., whose researches as a geologist, and whose 

 map of the Bristol Goal-field, are so well known. 



2. Anatina Gothamensis, spec. nov. 



. This shell is oval and pointed, J an inch long by | broad. Sur- 

 face marked by fine curved striations, granulated at the posterior 

 edge. I have found this solitary specimen in the Planorbis-bed, 

 Gotham. 



3. Hinnites minutfs, spec. nov. 



This I believe to be new; shell coarsely striated, round; has 

 7 forked striations. Shell y^^ inch long by the same broad. Locality, 

 first quarry, bed No. 11, accompanying Monotis decussata. I may 

 mention that I have found a slab at Gotham containing Pecten Helii^ 

 Rhi/nchonella.plicatissima, Quensted, and what is apparently P. Va- 

 loniensis; but not being found in situ, I have not mentioned it in 

 ray notes on the strata. 



