268 Dr. FiTTON on the Strata below the Chalk. 



Terehratula nuciformis. Rowde Hill. 

 Fermetus umhonatus. Rowde Hill. 



\_Lower Green-sand.^ 



Area ? Lockswell Heath, near Bowood : in ferruginous coarse sand-rock. 



Corhula ? Lockswell Heath : in ferruginous sand-rock. 



Cardium strialulum ? Lockswell Heath. 



Cucullcea. Lockswell Heath : in ferruginous sand-rock. 



Z>iceras Lonsdalii. PI. XIH. fig. 4. a. — d. Near Calne. Mr. Goodhall. 



Modiola. Lockswell Heath. 



Mylilus. Lockswell Heath. 



Pecten obliquus. Lockswell Heath : in ferruginous sand-rock. 



P quinquecostatus . Lockswell Heath. 



Plagiostoma rigidum. Lockswell Heath. 



Terehratula latissima. Lockswell Heath : in ferruginous sand-rock. 



T nuciformis. Lockswell Heath : in ferruginous sand-rock. 



T oblonga. Lockswell Heath. 



Thetis minor. Lockswell Heath : in ferruginous sand-rock. 

 Trigonia gibbosa ? Lockswell Heath. 



Turbo moniliformis. Lockswell Heath : in ferruginous sand-rock. 

 Venus ? Lockswell Heath. 



IPortland Ooliie.l 



Ammonites biplex. Swindon. 



A giganteus. Swindon. 



Buccinum angulatum. Swindon. PI. XXHT. f. 5. 



B naticoide. Swindon. PI. XXHI. fig. 4. 



Cardium dissimile. Swindon. 



Ci/therea rugosa. PI. XXII. f. 13. Swindon. The predominant shell in the upper 



bed of the great quarry. 

 Gastrochcena. Swindon, 

 Lucina Portlandica. PI. XXII. f. 12 Swindon: in stone very like freshwater 



limestone; full of moulds and casts of this shell. 

 Nerita angulata. PI. XXHI. f. 2. Swindon. 

 05/rea falcata. PI. XXHI. fig. 1. Swindon. 

 Pecten. Swindon : in stone, very like the Forest Marble. 

 Perna quadrata. Swindon. 

 Terebra Portlandica. PI. XXHI. f. 6. Swindon. In great profusion, in the stone of 



the great quarry. Some specimens stained with oxide of iron; with Lucina. 



The impressions of the interior sometimes beautifully preserved. 

 Trigonia incurva. (Miss Benett.) PI. XXII. f. 14. Swindon. Tuberculated rid«es. 



T gibbosa. Swindon. 



Trochus'i Swindon. 



