SELLARDS.| Fossil Plants, Upper Paleozoic, Kansas. A413 
Neuropteris coriacea Lx. 
Geol. Surv. of Illinois, vol. 4, p. 887, pl. 8, figs. 7, 8, 1879; Coal 
IN Koree I, NONI IN, jo, ILI, voll alishy inkeay Gy alfeyst0). 
A number of writers have regarded N. coriacea as a syn- 
onym of N. rarinervis, while others have questioned the sepa- 
ration of the two forms. An examination of the type specimen 
of N. coriacea in the Harvard Museum of Comparative Zo- 
ology, and a careful study of a number of specimens of this 
form from the type locality at Mazon Creek contained in the 
Yale Museum, convinces me that there exists at Mazon Creek 
a species close to but distinct from N. rarinervis, from which 
it differs in having pinnules broader, more obtuse, sometimes 
faintly lobed on the lower side of the base, coarser in appear- 
ance, having a dull instead of a shiny surface. Other dis- 
tinctive characters are brought to light when the apices of the 
two fronds are compared. The pinnules of N. coriacea re- 
main proportionately broad, obtuse and approaching an ovate 
form, in marked contrast to the slender pinnules near the 
apex of the frond of N. rarinervis. The pinnules of N. coriacea 
reach a larger size, measuring 15 to 22 mm. long, 6 to 10 mm. 
wide. The veins seen through the dull thick surface are not 
so prominent as in N. rarinervis, although they are otherwise 
very similar to the veins of that species, and it is difficult to 
be confident of the reference of detached pinnules or parts of 
pinnee to one or the other of these closely related species. A 
few incomplete specimens have been obtained from Lansing, 
Kan., which I refer doubtfully to N. coriacea. 
Formation and locality: Cherokee shales, Lansing. 
Neuropteris caudata D. W.? PI. L, fig. 6. 
Neuropteris caudata David White, Carboniferous Flora of South. 
western Missouri, Bull. U. S. Geol. Surv. No. 98, p. 87, pl. 
figs. 1-9; Fossil Plants from the McAllester-Lehigh Coal Biola’ 
Ind. Ter., Nineteenth Annual Report U. S. Geol. Surv., p. 509, 
pt. 3, 1899: 
This species, originally described from the outlying basins of 
southwestern Missouri, apparently occurs rarely at Lansing. 
The anomalous forms of the species, however, such as are found 
at the type locality, have not been observed at Lansing. 
Formation and locality: Cherokee shales, Lansing, Kan. 
