T. G. HALLE. 
(Schwed. Südpolar-Exp. 
56 
Zamites pusillus n. sp. 
PL 7, fig. 12: text-fig. 12 a. 
The small frond figured in pi. 7, fig. 12, is undoubtedly a Zamites. It does not 
agree with any known species; and, being well preserved, it calls for the creation of 
a new name. 
Frond small, linear. Pinnæ attached somewhat obliquely to the upper face of 
the rachis, at a rather acute angle. Pinnæ straight or slightly falcate, with a con- 
tracted but symmetrical, not auriculate base, oblong to linear, obtuse. Veins spread- 
ing, bifurcating, .strong and dense, numbering at least 7 — 8 in the middle of the 
pinna. 
The species is characterized by the oblique attachment but non-auriculate base 
of the pinnæ, and the .shape and obtuse apex of the latter. Another important fea- 
ture is the remarkably dense and strong venation. The pinnæ of the opposite sides 
come into close contact at the median line of the rachis, but do not overlap. The 
successive pinnæ of the .same side are fairly close and sometimes imbricate. The 
oblique base recalls the insertion of the pinnæ in Otozamites, but it is symmetrical, 
with both corners equally rounded. In accordance with the definition of Zamites 
here adopted, the species must be referred to that genus. It is not possible to de- 
cide whether there is a callosity at the base. Fronds with pinna-bases of this type 
have, no doubt, frequently been referred to Otozamites; but among species described 
under that generic name, there is none that shows any close resemblance to the 
present specimen. Of the other forms in the Hope Bay flora it comes nearest to 
the species described here as Zamites Andcrssonii n. sp.; but it differs from that by 
shorter pinnæ and especially by a much denser and coarser venation. 
Zamites Andcrssonii n. sp. 
PI. 7, figs. 13. 22: text-fig. 12 h and c. 
The two specimens shown in pi. 7, figs. 13 and 22, no doubt belong to one 
and the same species, which does not appear to be identical with any one hitherto 
described. 
Frond linear, very gradually tapering towards ba.se and apex. Pinnæ attached 
to the upper face of the rachis, with a slight!)' oblique, contracted but symmetrical 
and non-auriculate base. Pinnæ linear, gradually tapering towards the obtuse apex. 
Veins slender, occasionally bifurcating, not very dense, numbering 4 — 5 in the middle 
of each pinna. 
The species evidently belongs to Zamites as defined here. The pinnæ of the 
opposite sides come close together at the median line of the rachis and are not 
