144 MEIUANOPTERIS. 



The nervation can just be made out in places. There is a strong 

 median nerve, giving off dichotomising secondary nerves of the 

 Cludophltlis type. 



Bardwan Coalfield, India. 



V. 10,893. A small fragment of a pinna, not unlike that 

 figured on Text-fig. 33a on p. 143. The nervation, however, is 

 rather indistinct. 



Near Nagpur, India. Sanlcey Coll. 



2. Cladophlebis, sp. (from India). 



1876. Ahtltopteris cf. whitlyensis, Feistmantel, Journ. Asiat. Soc. Bengal, 



vol. xlv, pt. 2, p. 362, pi. xxi, figs. 6, 6a. 

 1881. Asplenium whitbyense, Feistmantel, Flora Gondw. Syst., vol. iii, 



pts. 2, 3, p. 79, pi. xixA, figs. 2, 2a; pi. xIa, figs. 2, 3. 



Feistmantel figured some very imperfect fronds from the Raniganj 

 Group, India, which he regarded as identical with Alcthupteris 

 indica, 0. & M., and A. australis, Morr., both of which are of 

 Mesozoic age. It would be interesting if there were trustworthy 

 evidence for the appearance of fronds of this type in rocks as old 

 as the Pernio- Carboniferous. Feistmantel' s specimens, however, 

 are far too fragmentary to warrant any such conclusion. 



Genus MERIANOPTERIS, Heer, 1877. 

 [Flora Foss. Helvetia?, p. 88.] 

 Heer described this genus as follows : — " Frons dimorpha, 

 pinnulis fertilibus et sterilibus stipite communi affixis ; pinnulas 

 fertiles contractas, angustae, nervo medio valido, nervillis secundariis 

 simplicibus parallelis, soris interpositis, sori rotundato in quavis 

 pinnula biseriales. Frons sterilis tripinnata, speciosa, pinnis 

 secundariis elongatis, segmentis (vel pinnulis) nervo medio arcuato, 

 nervis secundariis dichotomis, infimis, in arcuam acutam anasto- 

 mosatis." The genus was founded for the reception of a frond 

 from the Keuper rocks of Switzerland. 



Meriauopteris major, Feistmantel. 



(Text-fig. 34.) 



1881. Merianopteris major, Feistmantel, Flora Gondw. Syst., vol. iii, pt. 3, 

 p. 83, pi. xixA, figs. 9-11. 



Type. Nos. 5192-4, Mus. Geol. Surv. India, Calcutta. 



Frond tripinnate, large. Secondary pinnae broadly elongate, 



