8 
T. G. HALLE 
(Schwecl. Südpolar-Exp. 
what similar; but there can hardly be any question of specific identity. It seems 
best for the present to keep the Antarctic specimens in a separate species. The 
shortness of the nodes is not a very reliable specific distinction; but in connection 
with the features of the free teeth, as described above, it seems to constitute a suf- 
ficient ground for separating E. approximatus from other known Jurassic species. 
Filicales. 
Genus Sagenopteris Presl. 
Sagenopteris paucifolia (Pi-IILL.) Ward. 
PI. I, figs. 1 — 5. 
Pecopteris paucifolia, Phillips 1829, p. 148; pi. 8, fig. 8. 
Glossopteris Phillipsii, Brongniart 1830, p. 225; pi. 61 bis, fig. 5; pi. 63, fig. 2. 
Sagmopteris Phillipsii, Presl in; v. Sternberg 1838, p. 165. 
Sagenopteris paucifolia. Ward 1905, p. 85; pi. 1 5, figs. I — 3. 
This well-known species is represented in the collection by several specimens. 
Ward has amply shown that the name Pecopteris paucifolia PplILl.IPS is older than 
Brongniart’s Glossopteris Phillipsii, as is indeed obvious already from the fact that 
the latter author quotes Phillips’ name as a synonym. There is no valid excuse 
for abandoning in this case the course clearly indicated by rules of priority. 
The specimens all consist of isolated leaflets, of which the best ones are re- 
presented in pi. I, figs. I — 5, and there is no trace of a common petiole. Most 
of the specimens, however, show an indication of their original lateral arrangement 
in their slightly asymmetrical shape. The specimen shown in fig. 5 may be 
mentioned as typical. The apex is not preserved, but the narrow and gradually 
tapering base is seen. The leaflet is linear — lanceolate in shape and slightly curved. 
The specimen in fig. 2 comes nearest to the one now described; it has an acute and 
strongly curved apex. The other leaflets are somewhat shorter and broader; the 
extremity is represented by the one in fig. 3, which is nearly entire. The actually 
broadest leaflet is that shown in fig. i : it measures nearly 2.5 cm. across, but is 
unfortunately not entire. This last specimen shows a marked undulation of the 
left-hand margin somewhat below the apex. The typical Sagenopteris-v^sW'äPxoxi is 
seen in most of the specimens, best in the one shown in fig. 2. The midrib is dis- 
tinct and fairly strong in the lower part and reaches to near the apex. The slightly 
arched lateral veins anastomose in the manner characteristic of the genus. 
There is no doubt that the majority at least of the Antarctic specimens of .Si^- 
genopteris belong to G. paucifolia. This is especially evident in the specimens 
shown in figs. 2 and 5, which have the typical narrow linear — lanceolate shape of 
