68 
T. G. HALLE, 
(Schwed. Südpolar-Exp. 
Frond pinnate; pinnæ very densely set, imbricate, attached at a wide angle. 
Pinnæ narrow, linear, with obtuse apex and auriculate base; basal lobe of the distal 
edge well developed. 
This specimen is characterized mainly by the very close arrangement of the 
pinnæ, which overlap with up to V4 or Vs of their breadth. The pinna is unusually 
narrow and, above the basal expansion, linear with parallel edges. 
The specimen does not resemble any known form of the genus and may repre- 
sent a new species. It is possible, however, that it is a very young frond of another 
species, though the shape of the pinnæ is different from that of any kind of frond 
in the Hope Bay flora. 
Otozamites sp. 
I'l. 7, fig. 10. 
The specimen figured in pi. 7, fig. 10, differs somewhat from all others described 
in this paper, and is better treated separately. In regard to the scantiness of the 
material it seems best to refrain from creating a new name; but the specimen is 
probably different from all known species of the genus. 
Frond narrow, linear. Pinnæ at an oblique angle, oblong, slightly but distinctly 
auriculate. Venation radiating, coarse. 
In habit, this specimen comes somewhat near the smaller fronds here referred 
to 0. lineai'is n. sp., for instance those shown in figs. 9 and ii. The pinnæ are 
more oblong, however, and the venation is much coarser and stands out much more 
distinctl5L This latter character appears to be the most prominent feature. The 
veins are not so few and distant as in some other species, for instance in 0. rari- 
nervis Feistm. (1879, p. 21; pi. 8, figs. 8 — li; pi. 9, fig. 6?), but they are so thick 
that the frond looks furrowed. There is a great resemblance to 0. OldhainiYYA^i:y\. 
(1877 a, p. 68) (= Palæozamia Bengalensis var. obtusa Oldh. & MORRIS, 1863, p. 28; 
pi. 19, figs. 3 — 5), and it may be that the specimen should be referred to that spe- 
cies; but in view of the somewhat narrower shape and the more acute angle of at- 
tachment of the pinnæ in the Antarctic frond, it seems better to leave the question 
open for the present. 
Genus Ptilophyllum Morris. 
For remarks on the delimitation of the genus, see Zamites^ p. 54. 
