XIV INIEODUCTION. 



reticulata as Lonchopteris MantelU, Brong. In addition to these 

 changes in nomenclature some additional species are recorded: 

 Cyoaiites Brongniarti, Mant., Sphenopteris Sillimani, Mant.=? Ony- 

 ehiopsis MantelU (Brong.), and 8. PUllipsii=Ruffordia Qopperti 

 (Dunk.), a\.io Lycopodiies'}, Calamites, and JEqumtum Zyelli, Mant. 

 The same author furnishes a list of "Wealden plants in a 

 communication to the Geological Society entitled " A tabular 

 arrangement of the organic remains of the County of Sussex ; 

 but in this list there are no species added to those already men- 

 tioned. Three years later Fitton's important paper was published : 

 "Observations on some of the Strata between the Chalk and the 

 Oxford Oolite in the South-East of England." ' Under the heading 

 Wealden, he includes "Weald Clay, Hastings Sands, and Purbeck. 

 New facts are brought forward with regard to the characteristic 

 and problematical fossil JSndogeniies erosa, S. and '^. = Tempshya 

 SoMmperi, Corda, and a new species of Sphenopteris, S. gracilis, 

 ^1^071'= Sphenopteris Fittoni, sp. nov., is figured and briefly 

 described ; the occurrence of a Coniferous cone is also noted. 

 "Without attempting to follow each step in the progress of our 

 knowledge of "Wealden floras, we may pass at once to a more 

 recent publication and notice what species are recorded. In 

 Topley's Memoir, previously referred to, the following list of 

 plants occurs*: — 



Araucarites {Zamiostrobus) Pipping- 



fordensis, IXng. 

 CurpoUthcs MantelU, TiiOTig.=? JSqui- 



setites Burchardti, Dunk. 

 Clathraria Lyelli, S. and "W.^ 

 Endoyenites erosa, S. and 'W.^ = Temp- 



sleya Schintperi, Corda. 

 EquiseUtes {Equisetum) Lyellii, Mant. 

 Lonehopteris MantelU, Brong. = 



Weichselia MantelU (Brong.). 

 Tterophyllum {Cycadites) Brongniarti, 



Mant. 



Sphenopteris gracilis, ¥1^0^. = Spheno- 

 pteris Fittoni, sp. nov. 



S. MantelU, Brong. = Onychiopsis 

 MantelU (Brong.). 



S. Fhillipsii, '^axA. = Enffordia Qop- 

 perti (Dunk.). 



S. Sillimani, Mant. = ? Onychiopsis 

 MantelU (Brong.). 



Thuytes ( Cupressites) Kurrianus, 

 Dunk. 



Zamiostrohus (Zamia) crassus, Lind. 



' Trans. Geol. Soc. ser. ii. vol. iii. 1835, p. 201. 



* Ibid. vol. iT. 1836, p. 103. 



3 p. 181, figs. 1 and 2, and Appendix A. p. 349. 



• Weald, p. 409. 



5 I have substituted Stokes and "Webb for Mantell as given by Topley as the 

 authors of the species. 



