5 n= 
nervation. They are thick, spatulate, broadly lanceolate to linear- 
lanceolate, rounded at the apex, cuneate below, with numerous erect 
primary nerves that fork repeatedly at avery acute angle, and curve 
but little in passing, generally rather distant, to the border. The 
fructification is not known, but it is supposed to be represented by 
the seeds of the genus Cardiocarpon (Samaropsis) occurring in the 
same beds. It is possible that the inflorescent leaves described in this 
report as Arberia may be found to belong to MNoeggerathiopsis, a 
question more fully discussed in my remarks on the former genus 
and on Gangamopteris. 
The leaves of Noeggerathiopsis are very similar to those of 
Cordaites, the chief distinction between the genera, as commonly 
defined, being the absence of false nerves or hypodermal strands 
between the true nerves. 
But many of the specimens of Noeggerathicpsis Hislopi in the 
collection show distinct slender hypodermal strands when in the 
right stage of maceratoin, though the false nerves are so deeply 
buried as not to appear in the better preserved examples. 
Noeggerathiopsis is one of the characteristic genera of the 
Gondwana floras, and like its associates, Gangamopteris and Glossop- 
teris, is represented in nearly all regions of those floras. Its range in 
the Southern Permo-Carboniferous flora is nearly the same as that of 
Gangamopteris, beginning with the advent of the Lower Gondwana 
fiora and extending to the close of the Permian (Damuda) ; or, if the 
record by Professor Zeiller is correct, it is present in Tonquin as late 
as the Rhetic. 
Noeggerathiopsis Hislopt (Bunhb) leist. 
Pl. IX, ie: 4-7, Ga. 
1861. Noeggerathwa? (Cyclopteris?) Hislopi Bunbury, 
Quart. Journ. Geol. Soc., vol. Xvii, p. 334, pl. x. fig. 5. 
1879. Noeggerathiopsis Hislopi (Bunb.) Feistmantel, Fl. 
Gondwana Sysi., vol. Ill, pt. 41, p. 23, pl. xix, fig. 1-6, 
pl. #X, fig. 4, pl. 2, 1831, p 118, pl. xIwA, figs. 4-14, pl. 
xlviA, figs. 3,4, Suppl., p. 58, pl. xxviii figs. 1,-4, 6-7! 
pl. xxix, fig. 1-4, pl. xxx, fig. 5-9 vol. IV, 1882, p. 41, pl. 
ix, fig. 1-3, pl. xiii, fig. 2-4, pl. xiv, fig. 1-3, 6,9, pl. xv 
fig. Ab, pl. xvii, fig. 4, pl. xviii, fig. 1, pl. xx, fig. 10, pl. 
