Dr. FiTTON on the Strata below the Chalk, 131 



Terehralula. Two or three other species, probably new. Near Hythe. S. 



Thetis major. Lowest beds of the middle group, near Ivy Cottage, Sandgate. S. and F- 



Trigonia alceformis. Near Court-at-Street. H. Ivy Cottage, Sandgate. Middle 



beds of the lower green-sand. F. Also near Seabrook. G. 



T clavellata. Seabrook. S. Also about Court-at-Street. H. 



T elongata. (var. of T. costata. Min. Conch.) An imperfect specimen. Near 



Court-at-Street. H. ; and Ashford, Kent. Mantell. 



T nodosa. Near Seabrook. S. 



T spinosa. (Minch. Conch.) Near Seabrook. S. Also near Pulborough. 



Mr. Martin. 



T spinosa var. PI. XIII. f. 3. Shorn Cliff, near Sandgate. G. and F. 



T — '■ . New, but indistinct. A cast. Hythe. H. The same with a fossil of 



Shanklin, Isle of Wight. So. 

 Trochus. Species doubtful. PI. XIV. f. 16. Near Court-at-Street. H. Also Bough- 



ton-Mount quarries, near Maidstone. F. 

 Venus angulata. (See Ct/prina.) 



V caperata ? (See Cylhercea.) 



V ovalis ? Lowest beds of the middle group : quarry near the Ivy Cottage, 



Sandgate. S. 



V . Cast of a small species. Lowest group of stone : quarries above Hythe. H. 



Vermetus poli/gonalis. Near Court-at-Slreet. H. Near Sandgate, and Seabrook. 



Min. Conch, Also from Bonchurch, and Ventnor Cove, Isle of Wight : but in 



the upper green-sand, or in gault. F. 



Wood. Coniferous, silicified. Near Folkstone, and Wilsborough. Rolled fragments 

 are frequent, at the junction of the gault with the top of the sands. 



Interior of Kent. 



(37.) I have dwelt the longer on the description of the coast near Folkstone, 

 on account of the distinctness with which the strata are disclosed there, and 

 of the geological celebrity of the place ; which has the advantage, also, of 

 being easily accessible to foreigners, from its proximity to France. The 

 details above given will supersede the necessity of minute description in many 

 of the following sections. 



The strata succeeding the chalk offer but little variety between the coast 

 and the vicinity of Godstone, in Surrey. The Upper green-sand is throughout 

 comparatively obscure. The gault, which in general occupies but a small and 

 narrow valley at the foot of the chalk escarpment, is extensively unveiled at 

 the entrance of the river gorges, and in those cases its surface is varied by 

 hills and other inequalities. The Lower green-sand agrees generally, both as 

 to structure and composition, with that of Folkstone, but the proportion of 

 calcareous matter decreases from Maidstone towards the west. 



