AAS Unwersity Geological Survey of Kansas. 
lar with his description of “elliptical depressions surrounded by 
a raised line, which, sweeping sharply around the ends of the 
depressions, continues double until a divergence takes place to 
embrace the next depression.” .Near the apex of the same 
specimen a third scar occurs on the middle of the rachis. An- 
other fragment of this species, figure 2, plate LXIX, has two 
sears of the ordinary size on the midrib and a third smaller one 
between these two and at the side on the lamina, about 14 mm. 
from the midrib. The scars on T. coriacea are very distinctly 
marked. Figure 1, plate LX VIII, shows a string of them on 
the rachis very suggestive of Fontaine’s figure. Two other 
specimens have a plainly marked row of scars on the rachis. 
The sears have no regularity of size, distance apart, or position 
on the rachis. In this respect they resemble Rogers’ original 
description for those of Macrotzeniopteris magnifolia, in which 
he says that the scars are placed at unequal intervals and at 
rather varying distances from the midrib, and not unfrequently 
on the midrib itself. 
A comparison of the scars borne on the rachises of the two 
species on which they occur has failed to bring out any constant 
differences between them in arrangement, structure or position. 
They are of various sizes, from very small, 14 mm. or less, to 5 
mm. long, about 1 mm. wide. The shape is seemingly constant, 
elliptical, with the longest axis parallel to the rachis. The de- 
pressed space around the scar, “‘raised line’ of Professor Fon- 
taine’s description of the counter depression, is always present, 
sometimes comparatively broad and well marked. 
Professors Rogers and Fontaine regarded the scars of Ma- 
crotzeniopteris magnifolia as probably the bases of sori. But 
their presence on another genus, Txniopteris, with additional 
evidence of their irregularity of arrangement, size, distance 
apart, and their position on the rachis—an unusual place for 
fern fructification—all argue strongly against such a conclu- 
sion. But there is more satisfactory:evidence. A specimen of 
Glenopteris splendens Sellards, from the same locality, has an 
identical scar on the rachis, as noted in the description of that 
species. . A second scar occurs on the rachis of another speci- 
men of the same genus, the species scarcely determinable, but 
probably the same. Glenopteris is a very different genus from 
Teniopteris and can hardly be thought of as having the same 
fructification. 
The presence of the scar on three genera and several species 
