142 CLADOPHLEBIS. 



1. Cladophlebis Roylei, Arber. 

 (Text-fig. 33.) 



1833. Pecopteris Lindleyana, Boyle, Illust. Bot. Himal. Mounts., p. xxix*, 



pi. ii, fig. 4. 

 1836. Aspidites Lmdleyanus, Goppert, Die Foss. Farn., p. 360. 

 1845. Pecopteris Lindleyana, Unger, Synops. Plant, foss., p. 96. 

 1850. P. Lindleyana, M'Clelland, Bep. Geol. Surv. India, p. 56, pi. xiii, 



figs. 10a-c. 

 P. Lindleyana, Unger, Gen. et Spec. Plant, foss., p. 171. 

 1861. Alethopteris Lindleyana, Schimper, Traite, vol. i, p. 568. 

 1876. Pecopteris Lindleyana, Feistmantel, Bee. Geol. Surv. India, vol. ix, 



pt. 3, p. 76. 

 Alethopteris Lindleyana, Feistmantel, Journ. Asiat. Soc. Bengal, 



vol. xlv, pt. 2, p. 360, pi. xx, fig. 7. 

 1880. A. Lindleyana, Feistmantel, Flora Gondw. Syst., vol. iii, pts. 2, 3, 



p. 80, pi. xviiiA, figs. 2, 2a ; pi. xixA, figs. 3, 4 ; pi. xxiiiA, figs. 11, 



11"; pi. xxxixA, figs. 10, 11. 

 1893. A. Lindleyana, Oldham, Man. Geol. India, 2nd pi. opp. p. 162. 

 1898. ? A. Lindleyana [?), Shirley, Bull. 7, Geol. Surv. Queensland, p. 20, 



pi. xiii, fig. 1. 

 1901. Cladophlebis Jioy/ci, Arber, Geol. Mag., dec. iv, vol. viii, p. 548. 



Type. V. 4192, Geol. Dept. British Museum (Nat. Hist.). 



Frond bipinnate; pinna? spreading. Pinnules attached by their 

 whole base, contiguous, oblong-oval, entire, or sinuate. Median 

 nerve slender, extending to the apex ; secondary nerves arising at 

 a sub-acute angle, dichotomising. Fructification of the ?Poly- 

 podiaceous type. 



The earlier figures of this species given by Royle, and especially 

 by M'Clelland, are somewhat misleading. Feistmantel has, how- 

 ever, shown the nervation fairly accurately (Text-fig. 33). It is 

 not possible, as I pointed out some years ago, 1 to adopt Royle's 

 specific name, as the term Pecopteris Lindleyana had been earl un- 

 applied by Presl to a fern now known as Coniopteris arguta 

 (L. & H.). Nor does this frond seem to fall naturally, as Schimper 

 and Feistmantel have suggested, within the limits of the genus 

 Alethopteris — a term now generally used in a restricted sense. 

 The habit and especially the nervation appear to agree more closely 

 with those of fronds included by Seward and others in the genus 

 Cladophlebis, and although this genus is generally reserved for 

 leaves of Mesozoic age I have ventured to refer this species to it, 



1 Arber (01), p. 549. 



