532 



PROCEEDINGS OF THE GEOLOGICAL SOCIETY. 



from Southernclown the beds are seen to belong to this group. On 

 the edge of the cliif on the Down, towards Sutton, there is a small 

 section, where the higher members given in Mr. Tawney's diagram 

 may also be examined. Those last mentioned are a Pentacrinital 

 limestone precisely like that upon the horizon of the coralliferous 

 conglomerate at Brocastle. GrypJicea incurva, as in the beds below, 

 abound in it, associated with Ammonites angulatus, A. BucldancU, 

 A. Conybeari, and A. semico status, with Belemnites acutus and the 

 phragmacone of a Belemnite of great size, previously mentioned 

 as containing Discina Davidsoni in its chamber, identical with those 

 found in the chambers of the Nautilus and Cerithium nodulosum at 

 Shepton. On the weathered surface of these beds the shells stand 

 out in considerable variety ; for, although collected from a small area, 

 they have yielded about fifty species. Except traces of Montlivaltia, 

 the coral-fauna is here wanting. A comparison of the others with 

 those of Sutton and Brocastle shows that they are more immediately 

 allied to the latter than the former, and manifests the great prepon- 

 derance of an "Infralias fauna," again associated with Gry^licBa 

 incurva and Ammonites from a supposed higher horizon. 



In a wal] on the Down above this section, I found a block of 

 reddish slightly conglomeratic limestone, in its matrix not unlike 

 Dolomitic conglomerate, which is evidently very fossiliferous. I 

 obtained from it the only specimen yet found of Neritina Hettan- 

 giensis, Terq. ; and in the same block were fragments of fish-re- 

 mains. I have been unable to find the locality whence it came. 

 The following are from the beds at the top of the clifi" : — • 



List of Organic Bemains from the Ammonites -Bucklandi heds. 



Cidaris, spines &c. 

 Ophioderma, joints &c. 

 Pentacrinites tuberculatus, Mill. 

 Serpula strangulata, Terq. 



Discina Davidsoni, Moore. 

 Hhynchonella variabilis. 

 Avicula Buvignieri, Terq. 

 Gervillia acuminata, Terq. 

 Gryphaja incurva, Sow. 

 Lima gigantea, Sow. 



duplicata, Sow. 



Hermanni, Sow. 



Ostrea irregularis. 

 Pecten sublasvis. 

 Pinna semistriata, Terq. 

 Area pulla. 

 Astarte cingulata, Terq. 



' ^P- . 



Cuculltea similis, Terq. 



Cardinia elongata. 



• , sp. 



Cardita (sulcata) Heberti, Terq. 

 Cypricardia compressa, Terq. 



tenora, Terq. 



Tancredia. 



Lucina arenicola, Terq. 



Modiola minima, Sow. 



Mytilus Sinemuriensis, Martin. 



Nucula. 



Cerithium Semele, Martin. 



verrucosum. 



, n. sp. 



gratum, Terq. 



Dentalium. 



Pleurotomaria Mosellanus ? Terq. 



Turritella Humberti, Martin. 



Dunkeri, Terq. 



Jenkeni, Terq. 



Melania Theodori, Martin. 



nodulo-carinata, Moore. 



Turbo liassicvis, Martin. 

 Ammonites angulatus. 



Jobnstoni. 



Bucklandi. 



■ Conybeari. 



• semicostatus. 



Belemnites acutus. 



elongatus ? 



Drift wood. 



Neritina Hettangiensis, Terq. 



