Bd. III; 14) 
THE MESOZOIC FLORA. 
93 
Schenk’s specimens presenting the same frequent branching and short branches as 
the Antarctic fragments. The leaves, however, are more closely adpressed in Cypa- 
rissidiuni cretaceum; and the two forms are probably not specifically identical. 
Correlations of the Hope Bay Flora. 
With the classification here adopted, the flora of Hope Bay numbers 61 different 
forms. Of these, it has been possible to refer 42 to definite species, either new or 
already known, whereas 5 others have been doubtfully compared with other known 
species. Of the rest, 12 forms have been referred to definite, though often quite 
provisional, genera and 2 have been left without any attempt towards a generic de- 
termination. The distribution of the forms among the different groups is the following: 
Equisetales i, Filicalcs 25, Cycadophyta 19, Coniferœ 13, Gymnosperms of unknown 
affinity 2, plant of unknown affinity i. 
The first fact to be gathered from a general review of the flora, is the entire 
absence of Angiosperms or any forms to be brought under suspicion as such. The 
balance between the Pteridophyta and the Spermophyta is fairly even but in favour 
of the latter group. It is to be noted, however, that some few forms, in accordance 
with the prevailing opinion, have been referred to the Pteridophyta, though the evi- 
dence of their belonging to that group is far from conclusive: so, for instance, the 
genera Pachypieris and Tliinnfcldia. 
Among the Pteridophyta there is no representative of the Lycopodiales and only 
one of the Equisetales^ whereas all the other forms are certain or presumptive mem- 
bers of the Filicales. Of the species belonging to the latter group, only three occur 
in a fertile state, thus permitting of a somewhat more certain classification. These 
are Todites Williamsoni, which is usually referred to the Osuuuidaceæ, and Conio- 
pte}ds hymenophylloides and C. cfr. nephrocarpa^ which are now mostly included in the 
Cyatheacece. The remaining majority of species have here been arranged according 
to the artificial system, even though specimens referred to the same species have 
sometimes been described in the fertile state from other regions, thus throwing some 
light on the probable affinities of the sterile Antarctic specimens. 
Of artificial groups, the Dictyopterideœ are represented only by some small 
fragments of a Dictyophyllum^ which cannot be referred to any definite species. The 
Pecopterideæ are common, and so are the SpJienopteridece. A characteristic feature 
of the flora is the occurrence of a large number of specimens with small and thick 
pinnules and indistinct venation, such as are generally referred to the genus Sclero- 
