Manchester Mevioirs, Vol. xliv. (1900), No. 8. 23 



the epidermis demonstrates also the occurrence of stomata 

 (S, fig. 3), which appear to have been situated below the 

 level of the epidermis. The kjnger cells represented in 

 the lowest part of fig. 3A, illustrate the form of the 

 epidermal elements situated immediately above the veins. 

 The specimen in the Manchester Museum is clearly 

 distinct from the well-known Lower Oolite species, Ctenis 

 falcata L. and H., but it hardly affords sufficient data for 

 the institution of a new specific name; we may refer to 

 it as Ctciiis sp., cf Ctcnzs fal/ax Nath. 



C. GiNKGOACE.E. 



Gitikgo digziata (Brongniart). 

 PI. ii., fig. 5 (No. 3). 



1828. Cyclopteris digitata, Brongniart, Hist. Vcg. Foss., 



p. 219, pi \x.\b2S., figs. 2 and 3. 



1829. Splictiopteris latijolia, Phillips, Gcol. Yorks.^ p. 148, 



pi. vii., fig. 18. 

 1833. Cyclopteris digitata, Lindley and Hutton, Foss. Flora, 



pi. Ixiv. 

 1836. Adiantitcs digitatits, Goppert, Foss. Farm., p. 217. 



A. Huttoni, ibid., p. 217. 



1843. Baicra digitata, Braun, in Munster's Bcitr. Pctrcfact., 

 p. 21. 



B. Huttoni, ibid., p. 21. 



1868. Cyclopteris incisa, Eichwald, Letli. Ross., pi. iv., fig. 6. 



1877. Ginkgo digitata, Hcer, Flora Foss. A ret., vol. iv. (i.), 



p. 40, pi. viii., fig. I A ; pi. X., figs. 1-6. 

 G. Huttoni, ibid., p. 43, pi. x., fig. 10, etc. 



1878. G. ijitegriuscida, ibid., vol. v., ii., p. 25, pi. vi. figs. 



5 and 6. 

 1884. Salisburia digitata, Saporta, Pal. Franc., vol. iv., 

 p. 294, pi. clx., figs. 1-5. 

 5. Huttoni, ibid., p. 299, pi. clix., figs. 4 and 5 ; pi. 

 clx., fig. 8. 



