RUFFORDIA. eh 
1854. Sphenopteris Phillipsii, Morris, Brit. foss. p. 21. 
1864. ? Sphenopteris Jugleri, Leckenby, Quart. Journ. Geol. Soc. vol. xx. 
p. 79. 
1869. Sphenopteris (Davall) Hartlebeni, Schimper, Trait. pal. vég. vol. i. 
p. 394, pl. xxx. figs. 2 and 3. 
Sphenopteris (Davall) Jugleri, Schimper, loc. cit. p. 394. 
Sphenopteris (Davall) longifolia, Schimper, loc. cit. p. 394. 
1870. Sphenopteris Auerbachi, Trautschold, Nouy. Mém. Soc. Nat. Moscou, 
vol. xiii. p. 19, pl. xviti. fig. 5. 
1871. Sphenopteris Gopperti, Schenk (in part), Paleeontographica, vol. xix. 
p- 209, pl. xxv. figs. 2-5.! 
1875. ? Sphenopteris Jugleri, Phillips, Geol. Yorks. edit. iii. p. 218. 
1878. Sphenopteris Gépperti, Dupont, Bull. Ac. R. Belg. sér. ii. vol. xlvi. 
p- 396. 
1881. Sphenopteris valdensis, Heer (in part), Secc. Trab. Geol. Portugal, 
4to. 1881, p. 14, pl. xv. fig. 11 [v. Same species under Ony- 
chiopsis Mantelli (Brong.) }. 
1890. Sphenopteris Gopperti, Nathorst, Denkschr. Ak. Wiss. math.-nat. 
Cl. vol. lvii. p. 48, pl. vi. figs. 2 and 3. 
1890. Sphenopteris, sp., Yokoyama, Journ. Coll. Sci. Japan, vol. iii. p. 34, 
pl. xiv. figs. 13 and 13a. 
Type. A small, imperfectly preserved pinna. Dunker’s type 
specimen agrees best with those English specimens which have 
ultimate segments of median size, in length and breadth. The 
details of venation are not shown in the figure. ‘The following 
definition is given by the author of the species? :— 
‘‘ Sphenopteris fronde tripinnata, apicem versus bipinnata, 
pinnis alternis distantibus vel plus minus approximatis, pinnulis 
alternis clavatis petiolatis apice laciniatis vel sub-emarginatis, 
laciniis obovatis, cuneatis, nervis obsoletis, rhacibus tenerrimis 
eanaliculatis.”’ 
The Rufford Collection has furnished us with an abundant 
supply of material, which enables us to extend the definition of 
the species, and evidence is afforded by some of the specimens 
of fertile fronds as to the probable botanical affinity of this 
Wealden fern. 
Frond tripinnate-quadripinnate, deltoid or rhomboidal, rachis 
frequently flexuous, pinne alternate, deltoid to ovate-lanceolate ; 
pinnules delicate, decurrent on the rachis, ultimate segments linear 
acuminate or ovate-cuneate. Venation of the type Cenopteridis and 
1 Pl. xxx. figs. 2 and 2a regarded as Onychiopsis elongata (Gey/.). 
- ? Wealdenbildung, p. 4. 
