115 



narrower part of the lamina is much, more convex in section than 

 the broader end. 



V. 9010. A specimen 18 cm. long and 5 cm. broad; a portion 

 •only of the pinna is seen ; venation clearly shown, here and there 

 forked veins may be recognised. 



Stonesfield ? 



Other specimens ;— V. 3426, V. 3428, V. 3460, V. 3461, V. 3462, 

 V. 4063, V. 4065 (the apical portion of a pinna, labelled ' ' Termination 

 of the rib of a Saurian"), V. 4068, V. 4644, V. 4650, V. 4651, 

 V. 4654 (?), V. 4675, V. 6583 (?), 41,380, 52,817. 



Genus CTBNIS, Lindley & Hutton. 

 [Foss. Flor. vol. ii. pi. ciii. 1834.] 



Ctenis latifolia (Brongniart). 



[Hist. Teg. foss. p. 266, pi. Ixxxii. fig. 6.] 



1828. Taniopteris latifolia, Brongniart, Prodrome, p. 62. 



T. latifolia, Brongniart, Hist. veg. foss. p. 266, pi. Ixxxii. fig. 6. 

 1833. Odotitopteris latifolia, Sternberg, Flor. Vorwelt, v.-yi. p. 79. 

 1838. Tmniopteris latifolia, ibid. vii. p. 139. 



Zamites latifolitis, ibid. p. 199. 

 1845. Tmniopteris latifolia, TJnger, SjTiopsis, p. 37. 



Ci/cadites{?), Buckman, Geol. Cheltenham, p. 67, pi. i. fig. 2. 



1848. Tieniopterii latifolia, Bronu, Ind. Pal. p. 1214. 



1849. T. latifolia, Brongniart, Tableau, p. 105. 



1850. T. latifolia, Uuger, Gen. spec. foss. plant, p. 213. 

 1854. T. latifolia, Monis, Brit. Foss. p. 23. 



1856. T. latifolia, Zigno, Flor. foss. OoUt. vol. i. p. 204. 



1869. Oleandridiam vittatum, Schimper, Trait, pal. veg. vol. i. p. 608. 



1871. Teeniopteris latifolia, Phillips, Geol. Oxford, p. 168. 



Fterophyllum Buckmanni, ibid. p. 170. 

 1873. Tmnioptens vittata (pars), Saporta, Pal. Fran9. vol. i. p. 445. 

 1884. Fterophyllum, Buckmanni, Kichards, Synopsis, p. 2. 

 1894. F. Buckmanni, "Woodward, Lower Ool. p. 599. 



Tmniopteris mttata, ibid. p. 600. 



The type-specimen of Brongniart's Taniopteris latifolia is in the 

 Oxford Museum. The veins are incorrectly represented in the 

 figure as separate ; they agree precisely with the veins of Ctenis in 

 being joined together laterally by oblique cross-connections. The 

 .single example of Ctenis that I have seen from Stonesfield is too 



