SELLARDS.] Fossil Plants, Upper Paleozoic, Kansas. 395 
The rachis of the primary (?) pinna is 6 mm. wide, finely 
lineate, punctz not present, apparently not strongly woody; 
thin and flat in the fossil condition, curved upward, thus indi- 
eating that it is not the primary rachis of the frond. The 
secondary pinne are distant, at right angles, marked with dis- 
tantly placed fine puncte; the tertiary pinne are alternate, 
oblique, separated by a distance of 3 to 4 cm. The quaternary 
pinnee are 4 to 10 mm. apart, 1 to 2 cm. long, and overlap some- 
what. The ultimate pinne are 2 to 5 mm. apart, the pinnules 
variously lobed as described for the species. Another speci- 
men on the same slab shows a secondary pinna with a very 
flexuous rachis, about 3 mm. wide, bending to meet the inser- 
tion of each of the tertiary pinnee. The first quaternary pinna 
on the lower side is reflexed, lying close to and partly across 
the rachis of the secondary pinna. 
Formation and locality: Cherokee shales, Lansing; Chanute 
shales, Thayer; Le Roy and Lawrence shales, Lawrence. 
Aloiopteris POTONIE. 
Jahrb. d. k. Geol. Landesanst. u. Bergakad., vol. 14, 1893. 
Aloiopteris (?) aquatica sp. nov. 
A few specimens have been obtained from the Lawrence 
shales which are apparently referable to an interesting new 
species. The largest pinna found has pinnules 1 to 2 cm. long, 
linear, alternate or subopposite, almost at right angles to the 
rachis, and divided into alternate ovate lobes standing out at 
right angles, the incisions between being broad and obtuse. 
The pinna and pinnules have a lax, flexuous appearance. The 
midvein of the pinnule is flexuous, and the lateral veins run 
out obliquely into the lobes, send off two or three branches, and 
themselves dichotomize near their termination. The veins are 
thick and flexuous, stand out distinctly from the thin leaf sub- 
stances, and end in minute projecting teeth. The rachis of the 
pinna is flat, ribbon-like and flexuous, bordered by a thin mem- 
brane. The most striking character of the species is its thin, 
lax appearance. 
Formation and locality: ,Twinmound, Lawrence shales, Up- 
per Coal Measures. 
