264 PROCEEDINGS OF THE GEOLOGICAL SOCIETY. [Jan. 23, 



Organic remains of stratum "c/' at JJpnor, 



Cardium nitens, Sow. Cytherea ovalis, var. .', Sow. 



Plumsteadiense ? Sow. Glycimeris or Pauopaea. 



n. sp. a. Melania inquinata, Defr. 



Cytherea or Cyprina, large gibbous sp. Natica Hantoniensis ? Pilk. 



Calyptraea trochiformis .' LamTc. Ostrea. 



Cerithiura variabile, Besh. Pectunculus Plumsteadiensis, Sow. 



Cyrena cuneiformis, Sow. Pleurotoma. 



obovata, Sow. var. Rostellaria Sowerbyi, Mant. 



tellinella }, Fer. Teeth of Lamnae. 



The undoubted admixture at this spot of several species of estuary 

 shells of the Woolwich beds with the ordinary fauna of stratum '*c" 

 is to be noticed. 



Thence through Sittingbourne to Faversham, I have met with no 

 section of this bed. In the year 1841 Mr. Trimmer"^ called attention 

 to a fossiliferous sandstone overlying the lower sands which repose 

 on the chalk, on the hill above Boughton between Faversham and 

 Canterbury, and mentions the occurrence there of four species of 

 moUusks. I visited this locality with Mr. Rees in 1843, and we 

 obtained from it a considerable number of other fossils, but owing 

 to the state in which they are preserved, the following list must 

 be received with some doubt. The bed consists of layers of very 

 hard and compact siliceous sandstone with subordinate bands of iron 

 sandstone. One of the upper seams of the latter contains rounded 

 flint pebbles, and abounds ^ith extremely well-marked impressions 

 and casts of shells, but the substance of the shells is in all cases re- 

 moved. The superposition of the bed is not sho-viu. It is about five 

 feet thick. At a short distance above it the London clay appears, 

 and below it, in the valley, the chalk outcrops. 



Organic remains of "■ c," near Boughton. 



Astarte. Fusus latus ? Sow. sp. 



Calyptraea trochiformis, Lamk. , long narrow species, same as at 



Cardium nitens, Sow. Upnor. 



Plumsteadiense, Sow. , n. sp., same as the Hedgerley sp. 



, n. sp. a. Melania inquinata, Befr. 



Cerithium variabile, Besh. Natica glaucinoides, Sow. 



C\Tena cuneiformis. Sow. Panopaea intermedia, Sow. 



obovata ?, Sow. Pectunculus brevirostris, Sow. 



Corhula longirostris, Besh. Plumsteadiensis, Sow. 



Cytherea ovahs, var. ?, Sow. Pyrula ? 



Cytherea or Cyprina, a large gibbous sp. Rostellaria Sowerbyi, Mant. 



The estuary species of mollusks are here less numerous than at 

 Upnor, and the marine species show an increase. 



This bed thence passes by the north of Canterbury to the cliffs be- 

 tween Heme Bay and the Reculversf , where a remarkably fine section 

 of the lower part of the London clay and of a large portion of the 

 underlying strata is exposed. These latter here put on a character 

 very different to any we have hitherto observed. Both the fluviatile 



* Proc. Geol. Soc. vol iii. p. 457. 



t See paper by Mr. W. Richardson, Proc. Geol. Soc. vol. ii. p. 78 ; also the 

 paper before quoted of Mr. Morris. 



