446 University Geological Survey of Kansas. 
(Kan. Univ. Quart., vol. 10, pp. 1-12, January, 1901.) The 
description of species is here given without change from that 
naper. In the earlier paper a rather full account is given of 
small oval bodies occurring between the veins of Txniopteris, 
and of scars on the rachises and lamina. The interneural 
bodies are small, oval, hard, lie midway between the veins, 
half immersed in the lamina of the leaf. They occur on both 
species of the genus. The size and number of these bodies 
seem to be characters of specific value. On the group of speci- 
mens which I have referred to T. coriacea they are propor- 
tionally large, readily visible to the eye, more distant and 
fewer than in the other species. Those on T. newberriana are 
smaller—although the fronds are larger—closer together, and 
scarcely visible without the aid of a lens. The bodies are 
readily removed from the frond. On touching the epidermis 
with molding-wax many of the small bodies adhere and may 
be transferred to the desired media for sectioning. Hardened 
balsam proved most successful as an imbedding medium. The 
sections made failed to reveal cellular structure in the bodies. 
More or less similar interneural bodies have been observed 
on several genera of fossil plants. Those on Teniopteris are, 
however, apparently unlike all others in that they are so pre- 
served as to admit of removal from the frond. Some species 
of Nilsonia Brongniart, a Mesozoic genus referred by some 
to the cycads, by others to the ferns, have dots between the 
veins very suggestive of those of Txeniopteris. The dots of 
Nilsonia polymorpha Schenk are described as small, situated 
at approximately regular distances apart, and between the 
veins. These have been variously regarded by different au- 
thors. Schenk®® regarded them as the remains of sori, and 
accordingly referred the genus to the ferns. Saporta consid- 
ered them more like fungi,®®! and referred the genus again to 
the cycads. Count Solms Laubach, in summing up the evi- 
dence (Fossil Botany, p. 140, Balfour’s translation) , considers 
Schenk’s view more probable than Saporta’s, and therefore 
treats of the genus among the ferns. Later writers have gen- 
erally referred the genus to the cycads. Those specimens of 
Nilsonia polymorpha having unsegmented pinne have, as has 
been often observed, a striking resemblance to Txniopteris in 
300. Die fosile Flora der Grenzschichten des Keupers und Lias Frankens, 1868. 
801. Paleontologie francaise, ser. 2, vegetaux, vol. 2, 1875. 
