394 FILICALES [CH. XXI 



Other species of the genus are recorded from Liassic rocks 

 of Steierdorfi (Hungary) and of Bomholm^. Nathorst* has 

 described a small Rhaetic species from Scania : a French 

 Permian plant described by Zeiller* and compared by him with 

 H. dichotoma, may be a Palaeozoic example of this Dipteris- 

 like genus. 



Some segments of leaves from the Eocene beds (Middle 

 Bagshot) of Bournemouth, and now in the British Museum, 

 described by Gardner and Ettingshausen" as Podoloma poly- 

 podioides, bear a close resemblance in the venation to the 

 lamina of Dipteris conjugata. 



1 Andrae (53) A. = Moeller (02) Pis. iv.-vi. 



3 Nathorst (78^) PI. ix. fig. 2. * Zeiller (79). 



° Gardner asd Ettingshausen (82) p. 29, PI. iii. fig. 6. 



