146 CLADOPHLEBI8. 



1850. Neuropteris lobifolia, Unger, Gen. spec. foss. p. 86. 



1854. Peeopteris lobifolia, Morris, Brit. Foss. p. 16. 



1856. Peeopteris lobifolia, Zigno, Flor. foss. Oolit. vol. i. p. 131. 



Neuropteris undiclata, ibid. p. 124. 

 1864. Neuropteris lobifolia, Leckenby, Quart. Journ. Geol. Soc. vol. xx.p. 76. 



N. tmdulata, ibid. 

 1869. Alethopteris lobifolia, Schimper, Trait, pal. veg. vol. i. p. 567. 



Sphenopteris tindulata, ibid. p. 376. 



1874. Cladophlebis uiidtdata, Schimper, loc. cit. vol. iii. p. 505. 

 C. lobifolia, ibid. 



1875. Peeopteris lobifolia, Phillips, Geol. Yorks. p. 210, pi. viii. fig. 13. 

 P. tmdulata, ibid. p. 211. 



1877. ? Alethopteris lobifolia, Feistmantel, Pal. Ind. (77 3 ), pi. iii. fig. 1. 

 1892. Alethopteris lobifolia, Bartholin, Bot. Tid. Bot. pi. viii. figs. 1 and 2. 



Peeopteris lobifolia, Fox-Strangways, Tab. Foss. p. 133. 



P. undulata, ibid. 



1894. Dicksonia lobifolia, Raciborski, Flor. Krak. p. 177, pi. xi. figs. 1-7 ; 

 pi. xii. figs. 1-6. 



Frond bipinnate. Pinnae long, linear acuminate, and spreading, 

 given off from the rachis approximately at right angles. Pinnules 

 linear, attached by a portion of the base, apices more or less acute, 

 the margin usually slightly lobed ; the basal pinnule on the lower 

 side of each pinna is characterized by its greater breadth. [None 

 of the specimens in the Museum Collection afford any evidence as 

 to the character of the son, but a small piece of a pinna in the; 

 Stockholm Museum (Text-fig. 23) bears indications of marginal 

 sori ; the data, however, are insufficient to enable us to determine 

 the probable position of the species.] 



Some large and well-preserved examples of Cladophlelis lobifolia 

 have been figured by Raciborski x from the Jurassic rocks of 

 Cracow. Among the specimens in the British Museum referred 

 to this species there is a great difference in the size of the 

 pinnules, but this is, I believe, largely due to the unusual length 

 of the pinnae, which are characterized by a gradual decrease in the 

 length of the ultimate segments towards the distal end. Some of 

 the larger pinnae bear a resemblance to Todites Williamson^ and 

 a reparation of the two types is not always easy ; Cladophlelix 

 lobifolia is usually recognizable by the narrow bases of the pinnules, 

 and by the spreading and open habit of the frond. 



1 Raciborski (94), pis. xi. and xii. 



