373 
to each other, joining in a rounded sinus near to rhachis, 
giving to the latter the appearance of a broad marginal 
wing; rhachis strong and grooved; average breadth of 
of pinna, 15 millimetres; average length of pinnules, 9 
millimetres ; breadth, 45 millimetres. 
Associated with 7. superba mihi, in shales beneath coal 
seam at Spring Bay. 
THINNFELDIA MEDIA Gtenison woods). 
Frond pinnatifid or bipinnate (?) pinne nearly opposite, 
lanceolate, acuminate, on the margin sinuate, the lower ones 
shorter, the upper more or less nearly auricled, the lower ones 
more or less decurrent, the costa dividing into many veins; 
these veins are forked. Stalk thick, striated. 
Localities.—TasManta—Spring Hill, Spring Bay. QUEENSLAND 
—Dubbo. 
References.—Tenison-Woods, Proc. Lin. Soc., N.S. Wales, 1883, 
Vol. VIIL., plate 6, fig. 1. 
PECOPTERIDES. 
Frond undivided, simple, or pinnate many times in a 
beautiful manner. Pinnules often entire, but here and there 
sub-divided, and with a dentate margin, base wholly adnate, 
rarely constricted, sometimes confluent. Costa persistent to the 
apex, pinnately ramose ; veins dichotomous, diverging to the 
Imargin at a more or less open angle. Venules simple, 
forking twice or thrice, rarely anastomosing When sori 
are present they are marginal or disposed towards the 
middle of the pinnule, punctiform, oval or linear. 
PrEcoPTreRIS (Brogniart). 
Veins emerging from the costa in a more or less open 
angle, diverging arcuately, simple or dichotomous, venules 
often forked. 
PECOPTERIS (?) TENUIFOLIA (M‘Coy). 
Sp. Char.—Bipinnatifid (?), pimnules and rhachis very 
slender, each about half a line wide; pinnules very long, 
oblique, linear, apparently simply united to the rhachis by 
their entire base, one very strong midrib running throughout ; 
secondary nerves unkuown. 
Lecalities.—TasmManta (2). N.S. Wates—Clark’s Hill. 
References—M‘Coy, Annals Nat. Hist., 1847, XX., p. 152, t. 9, 
f.6; ibid, Proc. R. Soc., V.D. Land, 1851, ip: 308, t. 9, “f. 6; 
Tenison- -Woods, Proce. Lin. Soc., N. Ss. Wales, 1883, Vol. VILL, pt. 
1, p. 110; R. Etheridge, jun., Cat. Aust. Fossils, 187 8, p. 98. 
PECOPTERIS CAUDATA. Nov. Sp. 
Frond bipinnate (?); pinne linear-lanceolate, pinnules 
connected, lobate or slightly pinnatifid from base to within 
an inch of apex, where the pinne terminate ina simple or 
F 
