Art. XVIII. — Note on Two Fossil Plants froin Dundas. 



By W. S. dun. 



[Read 14th December, 1899.] 



Mr. T. S. Hall has been kind enough to allow me to examine 

 two specimens of Tceniopteris and Baiera, occurring in an ochre- 

 ous, arkose sandstone at Dundas. Their state of preservation, 

 unfortunately, is not so good as to enable them to be determined 

 specifically, but there is suflScient evidence to show that they 

 differ from anything already recorded from Victoria. 



Taeniopteris, sp. ind. 



Length of frond 91 mm.; stalk as preserved, 29 mm. long; 

 the breadth in the widest part would be about 22 mm. Apex 

 obtuse. Venation not seen except in the apical portion, close, 

 simple, inclined to the midrib at about 45°. Midrib well 

 developed. 



This species falls within the section of Tseniopterids classed as 

 Oleaiidridium in which the fronds are simple, elongate-lanceolate ; 

 the venation is more inclined to the midrib and siniple than in 

 the other main section, Angiopteridium. For comparison with 

 Australian forms we must take into consideration (1) Oieatidri- 

 diiim letitriciiliforme, Eth. hl.,^ (2) Tceniopteris etheridgei, Shii'ley,'-^ 

 and (3) O. kntriailari/orine, Eth. fil. (Shirley).^ From (1) the 

 Dundas specimen differs in having a longer and narrower frond 

 and more acute venation. The apical portion does not show 

 bifurcation of venation as in O. lentricuUforme, Shirley, which is 

 probably closely allied to the same author's T. etheridgei. (Both 

 Mr, Shirley's species differ, as figured, from the New South 

 Wales species in that the venation of the latter is to all intents 

 and purposes simple). 



1 Records Geol. Survey, N. S. Wales, 1S94, iv., p. 49, t. 8. 



2 Add. Foss. Flor. Queensland, 1898, t. 9, f. 1. 

 s Op. cit., t. 7, f. 3. 



