54 
same specimen is seen on the same plate (fig. 2). It measures nearly 12 cm. in 
length. The form of the bases of the pinnules, and the acute apices, are well seen. 
Part of another leaf is figured, three times enlarged, on Plate XI, fig. 1, to show the 
nervation. 
Remarks. —-This plant is abimdant at Waikawa. The pinnules of the leaves are not so 
long as those from India figured by Oldham and Morris, but correspond more closely 
with their variety “ conferta ” (see above). They are also shorter than the majority 
of Feistmantel’s specimens, though that author has also figured(l) several short- 
pinnuled leaves, with which the New Zealand specimens may be compared. 
The resemblance to the Wealden fronds from Patagonia recently figured by Halle(2) is 
still more remote. No doubt great, variations are met with in the fronds of this species. 
Seward(3) has concluded that Ptilophyllum acutifolium is identical with Williamsonia 
pecten (Phill.). I am not, however, convinced as to the specific identity, though 
no doubt, generically, the two plants are closely allied. 
Occurrence. —Curio Bay, Waikawa (Middle Jurassic). 
Stem of (?) Ptilophyllum sp. Plate XII, fig. 5. 
Description of the Specimen. —-The stem structure seen on Plate XII, fig. 5, natural 
size, is associated with leaves of Ptilophyllum acutifolium at Waikawa, and may 
possibly be the stem of that plant. It has a highly branched axis, three branches 
being seen in the figure—one a comparatively long one on the left-hand side, and two 
short lengths of branches below on the right. These axes show, however, no definite 
scars or other surface features, and they are probably decorticated. Fragments of 
petioles, which resemble the bases of the leaves of Ptilophyllum acutifolium, are appa¬ 
rently attached to the main branches, but actual continuity between the stem and the 
leaves cannot be demonstrated. The evidence of association is, however, in this case 
fairly strong in support of the provisional view that this specimen may be the stem of 
Ptilophyllum acutifolium Morr. 
Remarks. —This specimen somewhat recalls in appearance a badly preserved decorti¬ 
cated stem of Williamsonia in the Sedgwick Museum, Cambridge. 
Pinnule of a Cycadophyte. Plate VII, fig. 7. 
Remarks on the Specimen. —A single pinnule of a frond of a Cycadophyte, perhaps 
a Pterophyllum, occurs in the Mokoia. beds near Gore. This is figured, natural size, 
on Plate VII, fig. 7. The pinnule is narrow, and has six parallel nerves, but unfor¬ 
tunately it is too fragmentary for even generic determination. 
Phylum P 0 1) 0 Z A M I T E M. 
Genus PODOZAMITES Braun, 1843. 
(In Munster, Beitr. Petrifact., Heft vi, p. 28.) 
Podozamites gracilis sp. nov. Figs. 11, 12. 
Diagnosis. —Shoots exceeding 20 cm. in length. Leaves spirally arranged, linear- 
lanceolate, up to 6 cm. in length, and 4 mm. to 5 mm. broad at th'eir greatest width. 
Base gradually contracted, but not decurrent, apex acuminate. Nerves about 5 to 7 
in number, parallel. 
(1) Feistmantel (1876 1 ), pi. v, fig. 4 ; (1876 2 ), 
pi. i, figs. 2, 3 ; (1877 3 ), pi. v. fig. 5 ; 
(1879 2 ) pi. x, fig. 3 ; pi. xv, figs. 12, 13. 
(2) Halle (1913 2 ), p. 34, pi. iii, figs. 1-12. 
(3) Seward (1900), p. 193 ; (1904 2 ), p. 108. 
