240 Proceedings of the Royal Physical Society. 
and bearing about five pinnules. Pinnules obtuse, oval, 
obovate, or cyclopteriod-orbicular; terminal pinnule oval or 
oval-rhomboidal, obtuse; notched or lobed, the lobes being, 
in some cases, deeply cut and almost separated from the 
terminal pinnule. Veins distinct, generally only once 
divided and placed in furrows—a central vein scarcely 
present, the veins generally radiating from the short foot- 
stalk of the pinnules. 
Remarks.—At Fig. 2¢ is shown one of the ultimate pinne 
from near the apex of a (?) primary pinna. It consists of 
an obovate terminal pinnule and two lateral lobes. In fact, 
the whole structure may be regarded as a single pinnule 
with a terminal and two basal lobes. Figs. 2a and 2b show 
portions of two pinne from the base of a (?) primary pinna 
—2a being almost complete; 2) only showing its lower 
portion. In 2a only the two lowest pinnules are free and 
stalked, the angle pinnule being lobed, one of whose lobes 
is almost completely separated. 
This species forms one of a group, to which Schimper has 
applied the term Sphenopteris-Aneimites.1 The group con- 
tains a number of closely-allied species, of which may be 
mentioned Sphenopteris obtusiloba, Brongt, Sphen. trifoliolata, 
Artis sp., Sphen. nummularia, Gutbier, and Sphen. Sauveurat, 
Crépin. 
Sphenopteris polyphylla, L. and H., is smaller in all its 
parts than Spen. obtusiloba. The terminal lobe is also much 
larger in Sphen. polyphylla in proportion to the other piunules, 
and its ultimate lower pinne are more deltoid in outline. 
From Sphen. trifoliolata it is easily separated by the form of 
the pinnules. The growth of the two species has also a 
different aspect, and in Sphen. trifoliolata the terminal 
pinnules are small. The same remarks distinguish Sphen. 
Sauveurtt from Sphen. polyphylla, though there are also 
other points of difference. Sphen. nummularia is easily 
separated from Sphen. polyphylla by its lanceolate pinne, 
with small terminal lobe and close-set and only slightly 
lobed pinnules. 
1 Schimper, Traité d. paléont. végét., vol. i., p. 399, 1869. Also see 
Zittel, Handbuch d. palent., Abth. ii., Paleophytologie, p. 108, 1879. 
