43 
Description of the Specimen .—The single example of this frond from Gore is 
figured on Plate II, fig. 4, natural size. The pinna measures 7-4 cm. in length. 
1 he rachis is slender and perhaps grooved. The pinnules measure about L5 cm. in 
length, but vary somewhat in breadth, being about 1 cm. across at the broadest part near 
the base in the lowest pinnules seen in fig. 4, but narrower in the case of the higher 
pinnules. They are deeply dissected into a large number of small, wedge-shaped, 
contiguous segments, broadest at the apex, and these segments are again often toothed 
or lobed. 
Type .—Sedgwick Museum, Cambridge. 
Occurrence. —Mokoia, Gore (? Lower Jurassic). 
4. Sphenopteris otagoensis sp. nov. Plate 1, figs. 5, 6, 8 ; Plate V, fig. 7. 
Diagnosis. Frond bi- or tri-pinnate; rachis of ultimate pinnae grooved, slender. 
Pinnules subopposite or alternate, between 1 cm. and 2 cm. in length, lobed, contracted 
at the base ; lobes rather broad, rounded or rather acute at the apex. Nervation of 
the ordinary Sphenopterid type. 
Description of the Specimen. — This plant, which resembles some Palaeozoic 
Sphenopterids more closely than any Mesozoic species of the genus with which I am 
acquainted, is represented by several specimens. A photograph of one of these is seen 
on Plate V, fig. 7, twice enlarged. Drawings of two others will be found on Plate I, 
figs. 6 and 8, both natural size. An enlarged drawing of the nervation is seen on 
Plate I, fig. 5. 
Remarks .—This species may be related to, or even identical with, S. owakaensis, 
though on the present material I am inclined to regard them as distinct. 
Type .—New Zealand Geological Survey collection. 
Locality .—Owaka Creek, Catlin’s River (? Rhsetic). 
5. Sphenopteris owakaensis sp. nov. Plate V, fig. 8. 
I 
Diagnosis .—Rachis slender. Pinnules broadly ovate, 12 mm. long and 7 mm. 
to 8 mm. broad at the base, contracted at the base ; margin lobed, about three 
lobes on each side ; lobes rounded; terminal lobe small. Nerves supplying the 
lower lobes arising directly from the rachis ; median nerve impersistent, giving off 
at an acute angle numerous, strong, erect, and branched lateral nerves which fork 
widely. 
Description of the Specimen .—This species is founded on a single specimen consisting 
of 4 or 5 pinnules, part of which is seen enlarged three times on Plate V, fig. 8, to 
show the nervation. 
Type .—New Zealand Geological Survey collection. 
Occurrence .—Owmka Creek, Catlin’s River (? Rhgetic). 
6. Sphenopteris sp. Plate III, fig. 6 ; Plate V, figs. 3, 9. 
Description of the Specimens .—A very small fragment of a Sphenopteris frond, from 
the Malvern Hills, is figured on Plate III, fig. 6, twice enlarged. The lobes of the 
pinnules appear to be short but broad. This specimen is, of course, quite inde¬ 
terminable specifically. I figure it here as being a somewhat unusual type of frond 
from the Mesozoic rocks. 
