316 
thict,” are features plainly visible in the Queensland specimens. In the example from 
the Burrum (PL 17, fig. 2) the venation is indistinct, and vre have only the form of the 
leaflet to guide us, and this is unmistakably that of T. indica. In the subject of 
PI. 18, fig. 10, the venation is very strongly marked, the peculiar right-angled 
deflection and bifurcation, so characteristic of Thinnfddia, being present ; and, finally, 
there are traces of a by no means n’eak costa. Here again we observe a marked 
resemblance in the outline of the pinnules to those of T. indica, particularly PI. 89, 
fig. 1, of the reference above cited. 
I may, perhaps, be again allowed to refer to PI. 17, fig. 7, representing a specimen 
which seems to oscillate between the typo species and this form, or perhaps one of the 
varieties of the former. It is very like the type of A17 oods’ T. media in the Macleay 
Musenm, Sydney University. 
Mr. Gr. Sweet has obtained a bifurcating frond, seven inches long, with a large 
number of pinnules in sifu, which are cither long and curved, lanceolate, diminishing to 
a fine distal point, or short, obtuse, and bluntly rounded, both on opposite and the 
same sides of the rachis. There is a decided false midrib to the pinnules, which disap- 
pears before reaching their apices. The rachis, below the bifurcation, is nearly three 
and a half inches long, and striate, with pinnules on each side. The form of the 
pinnules is precisely that of Peistmantel’s PL 46, f. 1, and the habit that of his PL 39, 
f. 1. The specimen greatly confirms mo in the belief that Thinnfeldia media and T. indica 
are very near, if not identical. 
Loc. Burrum Coal Pield, near Maryborough, PL 17, fig. 2 {W. S. Bands). 
Occurs also in the Ipswich Beds. 
Family— PECOPTEEID^. 
Genus— ALBTSOPTEBIS, Bternlerg, 1826. 
(Flora der Vorwelt, Heft 4, p. xxi.) 
Alethopxeeis afsteahs, Morris, PL 16, fig. 1. 
Pecopteris australis, Morris in Strzeleoki’s Pbys. Descrip. N. S. Wales, &o., 1845, p. 248, t. 7, f. 1 and 2. 
Alethopteris australis, Sohimpier, Traito Pal. Vcg. 18C0, i., p. 509. 
Peoopteris australis, McCoy, Cool. Survey Viet., Decade ii., 1875, p. 16, t. 14, f. 3. 
Alethopteris australis, Feistmantel, Pal. Indica (Gondwana Flora), 1870, ii.. No. 1, p. 24. 
,, (Pccoptcris) australis, Feistmantel, Palaeontographioa, 1879, Supl., Bd. iii., lief 3, heft 2, p. 109, 
t. 14, f. 1 and la ; heft 3, i>. 169, t. 12, f. 5, 5a. 
„ australis (Asplcniim Whitli/ense, Hoer), Feistmantel, Pal. Indica (Gondwana Flora), 1881, iii., 
No. 3, p. 79. 
„ ,, , Ten. Woods, Proc. Linn. Soc. N. S. Wales, 1883, viii., Pt. 1, p. 111. 
Ohs. This fern has been so adequately described by Morris, Feistmantel, McCoy, 
and Woods, that it is not necessary to repeat the description here. 
Several very fine examples have been collected in the Ipswich Basin ; one of these, 
from Bundanba, is a portion of a frond, eight inches long, and shows a spread of the 
pinna) equal to seven inches. In the former space there arc portions of four pinnae, three 
attached to the rachis. This -will afford some idea of the size to which it attained, two 
of them being respectively four and five inches long. The frond, as described by the late 
Eev. J. E. Tonison AVoods, is bipinnate, and the pinnae alternate and oblique. In the 
Bundanba specimens the secondary veins of the pinnules undoubtedly fork twice, as 
in Morris’s original examples * from the Jerusalem Basin, Tasmania. The margins of 
the pinnules are also serrate ; but, on the other hand, specimens from Gray’s Seam, 
Ipswich, present these entire, and the veinlets only bifurcate once. The occurrence of 
both varieties in this Coal Basin is very interesting. The rachis is highly corrugated. 
* Strzelecki’s Phys. Descrip. N. S. Wales, &e., 1815, t. 7, f. 2a. 
