CLADOPHLEBIS. 91 



V. 2197. Portions of seven pinnae with the rachis very pro- 

 minent. In many of the pinnules the midrib is fairly well defined, 

 but the venation as a whole is much less distinct than in the 

 figured specimen (V. 2204). Ecclesbourne. Rufford Coll. 



V. 2203. Fragments of pinnae showing distinct venation. In 

 these pieces the central axes of the pinnae have a well marked 

 longitudinal groove ; the individual pinnules show the specific 

 characters clearly. Ecclesbourne. Ruffurd Coll. 



V. 2210. This specimen shows part of the main rachis, and the 

 manner of attachment of the pinnae. Ecclesbourne. Rujford Coll. 



2. Cladophlebis Alberts!! (Bunker). 



1846. Neuropteris Albertsii, Bunker, Wealdenbildung, p. 8, pi. vii. figs. 6 

 and 6a. 



1849. Cladophlebis Albertsii, Brongniart, Tableau, p. 107. 



1850. Neuropteris Albertsii, linger, Gen. spec, plant, foss. p. 83. 



1853. Neuropteris Albertsii, Ettingshausen, Abh. k.-k. geol. Reichs. p. 12. 



1869. Alethopteris Albertsii, Schimper, Trait, pal. veg. vol. i. p. 570. 



1870. Pecopteris Whitbiensis, 1 Trautschold, Nouv. Mem. Soc. Nat. Moscow, 



vol. xiii. p. 27, pi. xix. fig. 2. 



1871. Alethopteris Albertsii, Schenk, PalaBontographica, xix. p. 218, 



pi. xxvii. figs. 4 and 4. 

 ? Pteris Albertsii, Heer, Fl. foss. Arct. vol. vi. pt. i. p. 29, pi. xvi. 



fig. 5. 

 1883. ? Sphenopteris flabelltfolia, var. erecta, Tenison-Woods, Proc. Linn. 



Soc. N.S. Wales, vol. viii. pt. i. p. 94, pi. ii. fig. 2. 

 1888. ? Pteris Albertini, Velenovsky, Abh. math.-nat. Cl. k. bbhm. Ges. 



Wiss. vol. ii. Folg. vii. p. 15, pi. iv. figs. 5-10. 

 1892. ? Asplenium nebbense, Bartbolni, Bot. Tid. Bot. For. E/jovenhavn, 



p. 18, pi. vii. figs. 3-6. 



Type. Single pinna ; badly preserved. 



Dunker adopts the genus Neuropteris, and defines the species as 

 follows 2 : 



" Neuropteris fronde pinnata (bipinnata ?) pinnulis tenuibus 

 oppositis distantibus, sessilibus, oblongis, basi rotundatis vel 

 subcordatis, apice attenuatis, subobtusis; nervo medio crassiusculo, 



1 Cf. also Asplenites desertorum, Trautschold, loc. cit. pi. xviii. fig. 7. 



2 Wealdenbildung, p. 8. 



