20 Annals of the South African Museum. 



form of leaf named by Heer Oleandra arctica from the Cretaceous 

 (Kome) beds of Greenland''^ and with specimens from the Great 

 Falls of Montana described by Newberryf as " cf. Oleandra arctica 

 Heer." The type Tceniopteris arctica (Heer) is perhaps the most 

 nearly allied, as regards form and venation, to the South African 

 leaves. The Eajmahal leaves, described originally by McClelland as 

 TcBuiopteris spathulata\ and afterwards by Feistmantel as Angiop- 

 teridium spathulatum, § represent similar forms. The narrower 

 leaves from the Eajmahal Hills, figured by Oldham and Morris 

 and by Feistmantel and referred to McClelland's species, are un- 

 doubtedly identical with McCoy's Taniopteris daintreei,\\ abundant in 

 Jurassic strata of Victoria, and distinct from the Wealden Uitenhage 

 leaves. Nathorst's species Tceniopteris lundgreni, 11 from Upper 

 Jurassic beds of Advent Bay, Spitzbergen, is another type with 

 which the African specimens may be compared. 



The European Wealden species, Tceniopteris heyrichii Schk.,"''* is 

 most probably distinct from, although comparable with, such speci- 

 mens as those shown in pi. ii., figs. 5, 5a. 



Plate II., figs. 5, ba (172d, 193d). 



The venation is clearly shown in the figured fragments. 

 Similar portions of leaves occur abundantly in association with 

 Cladophlehis denticulata, forma atherstonei, but all are imperfect. 

 There appear to be about 10 secondary veins per 5 mm. of lamina ; 

 the average breadth of the leaf is approximately 1 cm. 



Other specimens : 168d, 385c. 



Group CYCADOPHYTA. 



This name has recently been suggested by Nathorstf f for Cycadean 

 plants which are known only in the form of vegetative organs and 

 cannot be referred with certainty to either the Bennettitales or 

 Cycadales — groups characterised by well-marked features exhibited 

 by their reproductive organs. 



* Heer (78), pi. xii., figs. 3-11. f Newberry (91), pi. xiv., fig. 9. 



+ McClelland (50), pi. xvi., fig. 1. § Feistmantel (77), pi. i. 



II McCoy (74), pi. xiv., figs. 1, 2. 1[ Nathorst (97), pi. iii., figs. 1-5. 



** Seward (94), p. 152, pi. ix., fig. 3. ft Nathorst (02). 



