90 CLADOPHLEBIS. 



inserti, orbiculares. Frondes bipinnatse, dichotomy. Venae sim- 

 plices vel varius furcatae." 



They include this genus in the Gleicheniacece. The nervation 

 appears to be very imperfect, but the median vein is nearly 

 always clear up to the apex of the pinnule. The figures 1, 2 and 

 3 of these authors, and also some specimens figured by Ettings- 

 hausen from the Cretaceous beds of Niederschona, resemble rather 

 closely some of the English examples of Cladophlebis longipennis. 1 

 In the absence of any satisfactory evidence in the Aachen species 

 as to affinity with Gleicheniacece, and in the face of certain 

 differences in the arrangement and shape of the pinnules in the 

 English fragments, it is better not to commit oneself to a definite 

 family, but for the present, at least, to retain the provisional name 

 Cladophlebis. 



Cladophlebis virginiensis, Font., 2 shows in some of its pinnules 

 a form and venation very similar to those of C. longipennis, but 

 there is probably no true affinity. Compare also Alethopteris 

 lobifolia, Schimp. (Phill.), Feistmantel, Fl. foss. Gond. vol. ii. 

 1880, p. 6, pi. iii. fig. 1. 



The venation of this new species is perhaps hardly of the usual 

 Cladophlebis type ; in some respects, e.g. the acute angle at which 

 the lateral veins spring from the midrib, it comes very near to the 

 Sphenopteris pattern, but the habit of the plant and the mode 

 of attachment of the pinnules are characters in favour of some 

 other genus than Sphenopteris. 



V. 2204. PL IX. Figs. 1 and la. 



This single curved pinna shows very clearly the chief charac- 

 teristics of the species. The veins are marked on the sandy 

 matrix with special clearness, as shown in the single pinnule, 

 Fig la. Ecclesbourne. Jtu/ord Coll. 



V. 10690. Small pieces of pinna imperfectly preserved. Near 

 Hastings. Presented ly P. Rufford, Esq., 1885. 



V. 2185 and V. 21850. In the former part of a single pinna is 

 shown ; in the latter a fragment of the main rachis with a pinna 

 given off at a fairly acute angle. Ecclesbourne. Rufford Coll. 



1 Sitz. k. Ak. Wiss. Wien. matn.-nat. Cl. vol. Iv. Abth. i. 1867, p. 244, 

 pi. i. figs. 1 and 2. 

 8 Potomac Flora, p. 70, pi. iii. figs. 3-8 ; pi. iv. figs. 1 and 3-6. 



