141 
but wherever visible appears to be simple, and in no way furcate. 
If this be the case it will afford a good character for future 
identification. 
The frond outline is similar to that of Angiopterrdium MW Clel- 
landi, O. and M.,* but the neuration, according to Oldham and 
Morris, is occasionally dichotomous. Feistmantel’s additional 
figuret of the Indian plant quite bears out his predecessor’s 
description. At the same time Zeiller has given a representation} 
of this fern in which the neuration is quite simple, as that from 
Leigh Creek is believed to be. 
In the simplicity of its veins and general form of the frond the 
present one agrees very closely with the simple-margined varieties 
of O. tenuinerve, Brauns, even more closely than O. fluctuans, 
mihi, does. Both Nathorst’s figure previously quoted and another 
given by Schenk§ as O. tenwinerve are equally like the present 
fossil, but it differs considerably from O. lentriculiforme lately 
described|| by me from intercalated shale in the Hawkesbury 
Sandstone. 
Anthrophyopsis ? sp. ind. Pl. iv., fig. 2. 
Obs.—A large imperfect frond is in the collection that may 
possibly be referable to this genus. There is no trace of a mid- 
rib, but the elongated mesh-reticulation of the secondary veins 
described by Nathorst, the author of the genus, in his “ Flora of 
Bjuf” are well displayed. In the absence of any contrary 
characters, I have no option but to provisionally refer the Leigh 
Creek plant to Anthrophyopsis. 
Nathorst figures two species in the above work differing a 
good deal in the venation. In A. crassinervis{] what may perhaps 
be called the proximal venation occasionally forms a large elong- 
ate mesh, but towards the margins this becomes much stronger 
and closer. In A. Nilssonz,** Nathorst, the mesh is of equal size 
throughout, but so far resembling the former that the reticulation 
is large. In his “Flora of Haganas,” Nathorst gives a more 
complete figure of A. Nilssoni, and describes a third species— 
A. obovata, but in neither of these is the base of attachment 
shown. 
The frond, now before me, resembles a fish-tail in general out- 
line and expands rapidly towards the distal end. The base of 
attachment is widely subauriculate, the sides of the frond then 
* Pal. Indica (Gondwana Flora), 1863, I., pt. 1, fascic. 5, t. 23. 
t+ Ibid, 1877, pt. 2, p. 96, t. 46, f. 5 and 6. 
+ Ann. des Mines, 1882, Livr. Sept.-Oct., t. 10, f. 5. 
§ Foss. Flora Grenzsch., 1868, Atlas, t. 25, f. 3 and 4. 
|| Records Geol. Survey, N.S. Wales, 1894, IV., pt. 2, p. 49. 
| Floran vid Bjuf, 1878, I., t. 7, f. 3 and 4. 
** Bloran vid Byat, 1878,/1., t. 7, 1..5. 
