44 
Another species of Sphenopteris (Plate V, figs. 3 and 9, both twice enlarged) 
occurs in the Hokonui Hills. The pinnules here are oval, slightly lobed, and con¬ 
tracted at the base. Bach has a median nerve, and the lateral nerves dichotomize 
twice, or even three times. Both these specimens, however, are too fragmentary 
for specific determination. 
Occurrence. —Malvern Hills (? Lower Jurassic) ; McRae’s, Hokonui Hills (? Rhaetic). 
Genus TyENIOPTERIS Brongniart, 1828. 
(Prodr. Hist. Veget. Foss., p. 61.) 
Some species of Tceniopteris, in which the leaves are large and broad, have been 
referred to separate genera-—such as Macrotceniopteris Schimper, Angiopteridiuni Schimper, 
Stangerites Bornemann—by many authors, and more especially by Schimper and Feist- 
mantel. As I pointed out, however, in 1905(1), there are no good characters which 
clearly distinguish these genera from Tceniopteris, and certainly the size and shape of 
the leaf alone are untrustworthy data on which to base generic distinctions. 1 there¬ 
fore prefer to include all such fossils within the single genus Tceniopteris. 
1. Taeniopteris arctica Heer. Plate VI, figs. 1, 6; Plate VII, figs. 5, 9. 
1872. Tceniopteris arctica Heer, Ofvers. k. Vet.-Akad. Forhandl. for 1871, p. 1181. 
1874. Oleandra arctica Heer, Kreide Flora Arct. Zone ( Flora Foss. Arctica, vol. iii, mem. ii), 
p. 38, pi. xii, figs. 3-11. 
1891. Cf. Oleandra arctica Newberry, Amer. Journ. Sci., vol. xli, p. 201, pi. xiv, fig. 9. 
1903. Tceniopteris sp. (cf. Tceniopteris arctica ) Seward, Ann. S. Afric. Mus., vol. iv, pt. 1, 
p. 19, pi. ii, figs. 5, 5a. 
Diagnosis. —The following diagnosis was given by Heer in 1874 (see above) : 
“ Foliis coriaceis, petiolatis, lineari-lanceolatis, basin et apicem versus sensim attenuatis, 
acumimatis, integerrimis nervo medio valido, nervis secundariis horizontalibus, numerosis, 
dichotomis; soris rotundatis, biseriatis, nervo medio appro ximatis.” 
Description of the Specimens. —-In Plate VI, fig. 1, several leaves are seen, twice 
enlarged. The longest frond is 5 cm. long, and about 1 cm. broad. The midrib is 
fairly strong, and the lateral nerves are very clear, distant, and once forked; the 
branches of the forks being distant. Fig. 6 of the same plate illustrates a narrower type 
of frond, natural size. Two other specimens, in the British Museum collection, are 
shown by figs. 5 and 9 of Plate VII, both somewhat enlarged. 
Remarks. —Fragments of this frond also occur on the large specimen figured in 
Plate XIV, but are not seen in the photograph. 
This species in some respects very closely resembles T. Daintreei McCoy in 
habit. It differs, however, in the nervation, the nerves being conspicuous and com¬ 
paratively distant, forking either near the midrib or at any point between the midrib 
and margin. 
The New Zealand specimens appear to me to agree very closely with the fronds 
from the Cretaceous of Greenland figured by Heer in 1874 (see above), especially 
the fig. 3 of plate xii of that memoir. They also somewhat resemble the specimen 
from the Uitenhage Series of Cape Colony, figured by Seward in 1903, and doubtfully 
referred to Heer’s species. 
Occurrence. —Waikato Heads, Auckland (Neocomian). 
(1) Arber (1905), p. 120. 
