CLOSSOFTERIS. 



11 



considerable variations in size. Zeiller 1 has recently figured some 

 Indian specimens, barely 2 cm. broad, pointing out, however, that 

 the type of nervation remains fairly constant. 



The specimen figured by Dana 2 as G. (?) cordata is simply a basal 

 portion of a frond of this species. Dana himself admitted that the 

 nervation is very similar to that of G. ampla. 



I think it probable that the frond termed G. orata by Johnston 3 

 should also be included here. No figure has been published of this 

 Tasmanian leaf, and it is therefore not easy to arrive at any decision 

 on this point, but the author states that it appears to differ only in 

 details from G. ampla. Johnston's specimen was obtained from the 

 Henty River, Tasmania. 



Distribution. — Permo- Carboniferous (Glossopteris flora) : — India, 

 in the Talchir and Damuda divisions ; New South Wales, in the 

 Newcastle Series ; Queensland ; Tasmania (Mersey River) ; Cape 

 Colony, Natal, ? Rhodesia. 



Fronds of Glossopteris ampla from India. 



V. 7141. A fragment of a frond, measuring 7 - 5 cm. in length, 

 and rather more than 5 cm. across. The midrib is stout. The 

 characteristic nervation of this species, consisting of a few rows of 

 comparatively broad meshes bordering on the midrib, and a much 

 finer, closer, and sub-parallel nervation towards the margin, is well 

 seen in this specimen. 



Nagpur, India. Hunter Coll. 



46,705ff. A fine frond, measuring 27 cm. long and 8 cm. broad 

 at its widest part. The midrib is stout, the lateral nervation very 

 oblique and almost at right angles to the midrib. The larger 

 meshes near the midrib are well seen. Portions of other fronds 

 occur on the same specimen, which probably also belong to this 

 species ; one being a fairly complete leaf, and another a basal 

 portion of a frond. 



Silewada, 12 miles north of Nagpur, India. Hunter Coll. 



1 Zeiller (02 1 ), p. 14. pi. iv, figs. 5 (pars), 6, 6a. 



2 Dana (49), p. 718. pi. xviii, fig. 5. 

 s Johnston (92), p. 13. 



