XIV INTRODUCTION. 
reticulata as Lonchopteris Mantelli, Brong. In addition to these 
changes in nomenclature some additional species are recorded: 
Cycadites Brongniarti, Mant., Sphenopteris Sillimant, Mant.=? Ony- 
chiopsis Mantelli (Brong.), and S. Phillipsii=Ruffordia Gopperti 
(Dunk.), also Lycopodites?, Calamites, and Equisetum Lyelli, 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 Endogenites erosa, S. and W.= Tempskya 
Schimperi, Corda, and a new species of Sphenopteris, S. graeilis, 
Fitton *=Sphenopteris Fitton’, 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- 
Sordensis, Ung. 
Carpolithes Mantelli, Brong. =? Equi- 
setites Burchardti, Dunk. 
Clathraria Lyell, 8S. and W.® 
Endogenites erosa, S. and W.° = Temp- 
skya Schimperi, Corda. 
Equisetites (Equisetum) Lyellii, Mant. 
Lonchopteris  Mantelli, Brong. = 
Weichselia Mantelli (Brong.). 
Pterophyllum (Cycadites) Brongniarti, 
Mant. 
| Thuytes 
Sphenopteris gracilis, Fitton = Spheno- 
pteris Fittoni, sp. nov. 
S. Mantelli, Brong. = Onyehiopsis 
Mantelli (Brong.). 
S. Phillipsii, Mant.= Ruffordia Gop- 
perti (Dunk.). 
S. Sillimani, Mant. = ? Onychiopsis 
Mantelli (Brong.). 
(Cupressites) Kurrianus, 
Dunk. 
Zamiostrobus (Zamia) crassus, Lind. 
1 
* Ibid. vol. iv. 1836, p. 103. 
3 
Trans. Geol. Soc. ser. ii. vol. iii. 1835, p. 201. 
3 p. 181, figs. 1 and 2, and Appendix A. p. 349. 
4 Weald, p. 409. 
® Ihave substituted Stokes and Webb for Mantell as given by Topley as the 
authors of the species. 
