WEICHSELIA. 1 ] 3 



V. 2352tf. This terminal fragment comes very near to 0. 

 Mantelli (Brong.), but, if compared with V. 2163, it appears to 

 be linked with S. Fittoni by well-defined characters. Eccles- 

 bourne. Ruff or d Coll. 



V. 2356. Cf. V. 2327; also the terminal part of the frond 

 with the tip of V. 2242. 



V. 23560. Part of a frond. Ecclesbourne. Rufford Coll. 



V. 2183. The two specimens with this registered number must 

 probably be regarded as tips of S. Fittoni fronds. 



V. 2372. On the same piece of rock is a specimen of Clado- 

 phlebis Allertsii (Dunk.). Ecclesbourne. Rufford Coll. 



V. 2878. V. 2882. Fragments. Near Hastings. BecUes Coll. 



Genus WEICHSELIA, Stiehler. 

 [Palaeontographica, vol. v. 1857, p. 74.] 



The reasons for which this generic name is substituted for the 

 older and better known term are stated in the description of 

 Weichselia Mantelli (Brong.). Brongniart's genus Lonchopteris, 

 under which W. Mantelli has hitherto been included, is defined 

 by him in the ''Prodrome" as follows 1 : 



"Fronde plusieurs fois pinnatifide; pinnules plus ou moins 

 adherentes entre elles 4 leur base, traversees par une nervure 

 moyenne ; nervures secondaires retieulees." 



Schimper, 2 in his definition of the same genus, adds "habitu 

 Alethopterideo." This Alethopteris habit is a recognized charac- 

 teristic of the genus, and is complied with by the species figured 

 by Brongniart in his " Histoire," except in the case of the 

 English and French Wealden forms. 3 The more perfect and 

 larger portions of fronds from Eussia and Germany, which are 

 usually known under the generic title Weichselia, are without the 



1 Prodrome, p. 59. 



2 Trait, pal. veg. vol. i. p. 620. 

 8 PI. cxxxi. etc. 



