178 Dr. FiTTON on the Strata below the Chalk. 



greatest abundance. A description of the several species of this genus repre- 

 sented in the annexed plates will be found hereafter, in the Appendix. 



Melanopsis ? attenuata. PI. XXII. f. 5. (Melania attenuuta, Ann. of Phil. 1824, viii. 

 p. 37 6.) In the Hastings sands, HoUington : F. Pounceford : M. 



M ? tricarinata. PI. XXII. f. 4. {Melania iricarinaia, Ann. of Phil, ibid.) 



Pounceford near Burwash, Sussex : M. 



Mi/tilus Lyellii. PI. XXI. f. 18, Beds below, or at the bottom of the Hastings 

 sands, near Battle: F. In slaty clay, near Pounceford: Messrs. Lyell and 

 Mantell. 



Neritina Fittonii. (Mantell ; South-East of England, p. 248.) PI. XXII. f. 7. Casts 

 in the grit of Tilgate Forest : M. 



Ostrea ? (a thin-shelled species). Sand-rock of the Hastings sands, west of St. Leo- 

 nard's : F. 



Paludina carinifera. (Min. Con.) Hastings-sands, west of St. Leonard's; below the 

 White Rock, Hastings; and at HoUington : F. In Septaria, at Resting-oak Hill, 

 near Lewes : M. 



P elongata. (Min. Con.) This fossil is very generally diffused in the Weal- 

 den strata. It occurs in nodules of clay iron ore, near the top of the Weald clay, 

 at Hythe : F. In hard blue grit, with Cypris Valdensis and C. granulosa ? In 

 the grit of Tilgate Forest : M. Near Ockley, in Surrey : F. 



P Jluviorum. (P. vivipara, Min. Con.) One of the most abundant univalves of 



the Wealden. On compact calcareous beds in the Weald clay; Bethersden and 

 Daniel's Water, Kent. At Henhurst, Surrey; in ferruginous sandstone. In 

 concretions of grit in the Weald clay, very large. At Forest- green, and near 

 Ewhurst, Surrey ; near Ockley, Surrey, with Ci/pris Valdensis, in beds of 

 " Forest marble." South of Den-park, Sussex : F. 



P Sussexiensis. PI. XXII. f 6. Resting-oak Hill, near Lewes, Sussex : M. 



two or more other species, probably new, occur at Tilgate : Mantell. 



Potamides ? With Cyclas media, in shale, alternating with limestone ; pits north-west 



of Battle : F. In Weald-clay, East Grinstead : M. 

 Psammohia} Tellinoides. PI. XXI. f. 6. With Cyclas in limestone; Pounceford near 



Burwash, Sussex : M. 

 Tornatella Popii. PI. XXII. f 8. Lenthington (pronounced Langton) Green, near 



Tonbridge Wells, in dark brown ferruginous sand-rock, with Unio, Cypris, and 



Cyclas : Rev. Mr. Pope ; and M. 

 Unio aduncus. Min. Con. Bolney, near Pulborough : Martin. Near Cuckfield, 



Sussex : M. 

 U- — antiquus. Min. Con. Weald clay, near Pulborough : Martin. Tilgate Forest, 



very frequent : M. 

 U— compressus. Min. Con. Weald clay, near Pulborough : Martin. Tilgate Forest : 



M. 

 U — cordiformis. Min. Con. Tilgate : M. 

 U— subtriincatus. PI. XXI. f. 15. With Ci/pris Valdensis, Ci/ das media, and Tor- 



