WEICHSELIA. 113 
V. 2352a. This terminal fragment comes very near to 0. 
Mantelli (Brong.), but, if compared with V. 2163, it appears to 
be linked with S. Lttoni by well-defined characters. Eccles- 
bourne. Rufford Coll. 
V. 2356. Cf. V. 2327; also the terminal part of the frond 
with the tip of V. 2242. 
V. 2356a. Part of a frond. Ecclesbourne. Rufford Coll. 
V. 2183. The two specimens with this registered number must 
probably be regarded as tips of S. Fvttoni fronds. 
V. 2372. On the same piece of rock is a specimen of Clado- 
phlebis Albertsi: (Dunk.). Ecclesbourne. Rufford Coll. 
V. 2878. V. 2882. Fragments. Near Hastings. Beckles Coll. 
Genus WEICHSELIA, Stiehler. 
[Paleontographica, 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 !:— 
‘‘Fronde plusieurs fois pinnatifide; pinnules plus ou moins 
adhérentes entre elles & leur base, traversGes par une nervure 
moyenne ; nervures secondaires réticulées.” 
Schimper,’ 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.* The more perfect and 
larger portions of fronds from Russia and Germany, which are 
usually known under the generic title Weichselia, are without the 
1 Prodrome, p. 49. 
2 Trait. pal. vég. vol. i. p. 620. 
3 Pl. cxxxi, etc. 
