SELLARDS.] Fossil Plants, Upper Paleozoic, Kansas. 451 
scription ; but this character is not always evident, and possibly 
not always present. 
I have considered the frond as probably simple, as there are 
no indications of a pinnate character, and it has the same shape 
as other tzenioptorids with supposedly simple fronds. The pe- 
culiarities of venation noted in the above diagnosis—veins near 
the base of the frond more curved at their union with the 
rachis, often forked, while those at the apex are only slightly 
curved, seldom forked—are seen also in the figures of the 
European specimens. The texture and shape of the fronds also 
agree. The fact that the oval bodies between the veins have 
not been previously observed may be due to the rarity of the 
species and the few specimens heretofore obtained. The scars 
on or near the rachis, whether the result of fungi or of insect 
stings, may have been absent on the European specimens. 
The slightly thickened and rolled border of this species might 
be taken to indicate the presence of a border vein—a supposi- 
tion to which the upward curve of the veins at the border adds 
strength. But if such a character belongs to the species it is 
not sufficiently preserved on any of the specimens at hand to be 
recognizable. Such a character, if it exists, would bring the 
species into comparison with the Mesozoic genus Oleandridium, 
some species of which it otherwise closely resembles. 
The species seems to have been found as yet in only two other 
localities, both Permian, Ottendorf in Bohemia, and Lissitz in 
Moravia, both recorded by Goeppert (loc. cit.) The specimens 
known of the species heretofore have all been somewhat frag- 
mentary. 
Formation and locality: Wellington shales, Banner City, 
Dickinson county. 
Tzniopteris coriacea var. linearis Sellards.” Pl. LXVIII, figs. 3, 4. 
Fronds smaller, more narrowly linear, apex very acute, aver- 
age width 7 to 20 mm., average length about 14 cm., thinner in 
texture, venation apparently thinner, and perhaps closer. 
_ The difference between the extreme forms of this variety and 
the specimens typical of the species is very great, and if there 
were no intermediate forms would undoubtedly be considered 
of specific value. But between the extremely narrow fronds 
such as figured (plate LXVIII, figure 4,) and those typical of 
the species (plate LXVII, figures 1 and 2) there are such con- 
tinuous gradations that I am entirely unable to draw any sep- 
302. Kan. Univ. Quart., vol. 10, p. 3, pl. 3, figs. 3, 4, 1901. 
