The Coal of Australia. 
433 
pinnated plants, the leaves of which agree with Cyclopteris in 
their neuration. Some of these forms were originally described 
by Lindley and Hutton (Fossil Flora) as Cyclopteris, under the 
impression that the rachis was a rhizoma; Brongniart (Prodrome 
and Hist. des. Vegetaux Foss.) gives several of them as Neurop- 
teris, apparently neglecting the important character of want of 
midrib. Goppert confounds both the simple and compound 
fronds in his Adiantites (Syst. Fil. Foss, in Nova Acta Acad. Cass. 
Leop. Cur. Nat.) and Unger does the same under the head Cy¬ 
clopteris (Chloris Protogeea). I have however thought it desirable 
to use the term for the pinnate species for which it was proposed, 
and thus retain Cyclopteris for the simple, entire fronds, in 
accordance with the original view of Brongniart. 
Otopteris ovata (M’Coy). 
Sp. Char. Frond pinnate; rachis very thick, slightly flexuous; 
leaflets little longer than wide, ovate, pointed; upper lobe of 
the base nearly twice the size of the under, the contracted, 
thickened base set obliquely on the rachis; veins fine, 
divaricating, very frequently dichotomizing, nearly equal, but 
fasciculated at the base. 
The fasciculation of the nerves at the base resembles that of 
the Cyclopteris fiubellata. The regular, short, semi-elliptical 
form of the leaflets distinguishes this from the other species of the 
genus. The average length of the leaflets in the examples I have 
seen is about 8 lines, width 7 lines, width of rachis line. 
Occurs in the hard siliceous flags of Arowa, N. S. Wales. 
Cyclopteris angustifolia (M’Coy). 
Sp. Char. Leaf linear, lanceolate, eight or nine times longer than 
wide; sides straight, nearly parallel, pointed above, contracted 
to a lengthened petiole below; nerves equal, those of the middle 
third of the frond nearly parallel, straight, rather closer than 
those of the sides, which gradually divaricate towards the 
margin at a very acute angle; all the nerves dichotomise at 
irregular intervals, and those of the sides occasionally anasto¬ 
mose and are connected by a few transverse bars. 
In this curious plant we have, as it were, a connecting link 
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