92 ON THE FOSSIL FLORA OF THE COAL DEPOSITS OF AUSTRALIA, 



S. iguanensis, M'Coy, Decades Paleont. Victoria. Dec. IV, 

 p. 22. PL XXXVI, fig. 35.— This species belongs to the sub- 

 genus Eremopteris, of Schimper, for such species of SpTienopteris as 

 have the frond dichotomously pinnate, pinnae irregularly pinnati- 

 fid, laciniate lobes elongate, obovate or sub-cuneate, veins dicho- 

 tomously radiating from the base. 8. iguanensis. Dichotomously 

 bi-pinnatifid, segments of usually five to seven lobes, oblique, 

 elongate, cuneate, confluent at base, apices crenulo-lobate by small 

 acutely angular indentations. Veins slender, numerous, forked, 

 diverging from the base usually about three to each lobe, a few 

 towards the middle stronger than the rest, but no distinct midrib. 

 Rachis rather thick. Length of pinnules, one to two inches, 

 greatest width usually about 4 lines. Obs. The pinnules or lobes are 

 smaller, narrower, diverge at more acute angles, and are much less 

 deeply divided than in the Sp. artemesifolia, Brongt., of the lower 

 Carboniferous rocks of Northumberland, to which it is most nearly 

 allied, and which is the type of Schimper's exclusively paleozoic 

 Eremopteris. Common in hard olive upper Devonian flags of 

 Iguana Creek, Victoria. 



8. elongata, Carruthers, Proceed. Geol. Soc. Lond, 1872, p. 355, 

 pi. XXVII, fig. 1 (Append. II to Daintree's paper on the Geology 

 of Queensland.) Frond dichotomously divided, each division 

 irregularly pinnate, pinnae simple, bi-furcate or irregularly pinnate, 

 segments narrow, linear, slightly tapering upwards to the some- 

 what blunt apex, the costa sending out simple veins which run 

 along the middle of each segment. Obs. With Pecopteris 

 (TMmifeldicb) odontopteroiaes this is one of the most abundant forms. 

 Seme specimens have small oval markings scattered irregularly on 

 either side of the midrib. These probably indicate the form and 

 position of the sori, which are the same as in some of the simple 

 linear species of Polypodium. Tivoli coal mine.* I find the same 

 oval markings on many different Ferns, and am inclined to refer 

 them to other causes. My own inclination is to place the fossil 

 with Trichomanides. 



* I can hardly confirm this about the fossil being common ; in fact I 

 should say that it is rather uncommon, and confined to certain horizons. 

 It is met with at Thomas's Aberdare mine as well. 



