19 



The specimens may be best compared ■with some with coarser 

 venation mentioned and figured by Seward from the Jurassic Flora 

 of Sutherland.^- A species which also bears a close resemblance to 

 these specimens is Ctenophyllum angusti folium, Fontaine from the 

 Jurassic Flora of Oregon. ^^ 



Localitj^ : — {Wallooii Series) : Portion 28, parish Biarra (1413). 



Figured specimen : The original of Plate 5, fig. 4, is specimen 

 1413 in the University of Queensland Collection. 



Pterophyllum parvum, Shirley. 



The specimen on which Shirley^^ based this species is a very 

 small fragment {less than 2-5 cm. long) and it is doubtful whether 

 it represents a distinct species. 



PSEUDOCTENIS. 



The generic name Pseudoctenis was proposed by Seward ^^ for 

 fronds agreeing with Ctenis in general habit, but in which there is 

 an absence of lateral anastomoses between the veins. The pinnse 

 are broadly linear and are attached laterally to the rachis as in 

 Pterophyllum, the lower margin being decurrent and the upper 

 •curving slightly upwards as it joins the rachis. 



Pseudoctenis eathiensis (Richards). 



(Plate 7, figs. 1,2.) 



1884. Zamites eathiensis, Richards, Proc. R. Phys. Soc. Eclinb., 



p. 117. 

 1892. ? Pterophyllum sp. ind., Etheridge Jr., Geol. Pal. Qland., 



p. 382, t. 16, fig. 3. 

 1911. Pseudoctenis eathiensis, Seward, Trans. Roy. Soc. Edinb., 

 47, p. 692, t. 4, fig. 62, 62a, 67, 67a ; t. 7, photo. 11, 12 ; 

 t. 8, photo. 32 ; t. 10, photo. 45. 



The specimen figured on Plate 7, fig. 1, is so remarkably 

 like that figured by Seward on Plate 10, photo. 45, of the Jurassic 

 Flora of Sutherland'^ that little hesitation is felt in identifying 

 the specimen with his species. 



The rachis is about 7 mm. broad and wrinkled longitudinally. 

 The pinnae are at right angles to the rachis and are at least 6 cm. 

 long, the specimen being incomplete, and are up to 1-1 cm. in width ; 

 they contract slightly towards the base. The margins of the pinnae 



'* Seward (11), p. 695, t. 5, flg. 86. ^^ Seward (11), p. 691. 



" Ward (05), p. 105, t. 32. ** Seward (11). 



** Shirley (98), p. 15, t. 17, flg. 4. 



