368 
SPHENOPTERIS FLEXUOSA (M’Coy). 
Sp. Char.—Bipinnate ; pinne very long, with a strongly 
flexuous naked rhachis; pinnules large, moderately oblique, 
unequal, ovate, sides cut into two very large obtusely rounded 
lobes on each side; apex trilobed ; nerves strong, much 
branched, seven branches reaching the margin of each lateral 
lobe, and three going into each of the three lobes of the 
apex. 
Pe aii © DiS ee Town (7). New Souta WAaLEs— 
Mulimbimba. 
References.—M’Coy, Annals Nat. Hist., 1847, XX., p. 150, t. 9, 
{4° ibid Proce. R. Soc. V.. Mand, 1eois Tp. 8074 tone 
Schimper Traité de Pal. Vég., 1869, IL, p. 411; Tenison-Woods, 
Proc. Lin. Soc. N.S. Wales, 1888, vol. VIII, pt. 1, p. 91; R. 
Etheridge, jun., Cat. Aust. Fossils, 1878, p. 99. 
TRICHOMANIDES. (Tenison-Woods, Proc. Lin. Soc, New 
South Wales, p. 94.) 
Frond simple or divided, bi, or tri-pinnate, primary rachis 
narrow, or terete, sori unknown. 
TRICHOMANIDES, HittrnsHAUSENI. Nov. Sp. 
Frond pinnate; (or bi-pmnate ?) pinne delicate, membranous 
narrow, with closely adpressed, simple distant alternate 
pinnules, similar in character to winged rhachis; pinnules 
simple, linear, sub-decurrent towards winged base, slightly 
diverging towards bluntly pointed apices. A simple nerve 
traverses branches and simple pinnule as in the existing 
Hymenophyllum rarum Br. Length of pinna, 3 inches; 
length of pinnules from junction of median nerve to apex, 15 
millimetres ; breadth of pinnule, 13 millimetres. 
This form is very distinct from Sphenopteris elongata, Carr., 
which also occurs in the Spring Hill beds, and with which it 
has some points of resemblance. 
RHACOPTERIS, SCHIMPER. 
Frond pinnate, rachis rigid, grooved in the middle. Pinnz 
elongate, broadly linear. Pinnules sub-horizontal, somewhat 
remote, contiguous or sub-imbricate, spreading, oblong 
rhomboidal, more or less deeply incised and flabellate ; lobes 
narrow, straight or slightly removed.—Obs.—The incisions are 
in the direction of the veins, and each ligule comprises one or 
two branches. The name refers to the incision of the 
pinnules. The genus hitherto was supposed to be confined 
to the Devonian or Lower Carboniferous. 
RHACOPTERIS (?) FErstmantTeLit. Nov. Sp. 
Frond coriaceous imparipinnate, handsome ; rhachis strong ; 
pinne sub-opposite, variable, distant, symmetrical or un- 
symmetrical, lingulate or obovate lanceolate, curved or spread- 
ing, greatly contracted at attachment to rhachis; terminal 
pinnule erect, inequilateral, with a rounded lobe on one side 
