20 



are entire, the lower margin being decurrent at the base. The- 

 attachment of the pimise is lateral. The veins are well-defined, 

 branching dichotomously occasionallj- ; there are about 17 veins 

 l^er cm. of breadth. 



The figures given by Seward of this species show a considerable 

 amount of variation, particularly in the angle which the pinnae 

 make with the rachis. Another species which is of similar nature to 

 those in which the pinnae make an acute angle with the rachis is 

 P. Lanei, Thomas, from the Jurassic Flora of the Marske Quarry, 

 Yorkshire.^' 



The specimen described and figured by Etheridge as Pterophyl- 

 lum sp. ind. from CoUnton^* very probably belongs to this species. 

 It agrees in the broad rachis, insertion of pinnae, and venation. 



Other specimens have the pinnae generally similar in form but 

 making an angle of about 60° with the rachis. These are similar 

 to figures of P. eathiensis^^ and may belong to the same species. 



Locahty : — {Walloon Series): Colinton (F 154) ; Portion 28, 

 Par. Biarra (1417) ; Coal Ck., near Esk (F 163) ; Portion 33, 

 Parish Esk (F 158). - 



Figured specimen : The original of Plate 7, fig. 1, is si^ecimen 

 1417 in the University of Queensland Collection. 



PoDOZAivnTES LANCEOLATUS, L. and H. 



Tenison- Woods*" recorded and described this species from the 

 Ipswich Basin. Etheridge*^ states, however, that the determination 

 is open to doubt, and there are no specimens at present in the 

 collection which can be referred to this species. 



PODOZAMITES SP. 



Etheridge*"^ described a specimen from Redbank as Podozamites 

 sp. His figure and an examination of the original specimen indicate 

 that the specimen is too imperfect even to be certain of a correct 

 generic determination. 



OTOZAMITES. 



Specimens belonging to this genus are characterised l)y the 

 manner of attachment of the pinnae to the rachis, by a more or less 

 distinct auriculation of the pinnae at the base, and by the divergent 

 venation. They occur fairly abundantly on horizons of the Walloon 

 Series. 



" Thomas (13), p. 242, t. 24, flg. 4 ; t. 26. *" Tenison-Woods (83), p. 145. 



'* Etheridge (92), p. 382, t. 16, flg. 3. *' Etheridge (92), p. 380. 



" Seward (11 ), t. 8, flg. 32. " Etheridge (92), p. 38(), t. 18, flg. 5. 



