SELLARDS.] Fossil Plants, Upper Paleozoic, Kansas. 435 
Formation and locality: Wellington shales, Banner City, 
Dickinson county. Also obtained from the Elmdale (Upper 
Coal Measures) at Onaga (David White, Bull. 211, U. S. Geol. 
Survey). 
Callipteris BRONGN. 
Callipteris whitii sp. n. Pl. LXI, figs. 8-11; pl. LXVI, fig. 3. 
Fronds apparently large, bipinnate or more. Penultimate 
pinne large, sloping gradually to the apex. Rachis strong, 
apparently round. Ultimate pinnez alternate, close, often 
touching or overlapping at the base, open or inclined forward 
slightly, lanceolate to linear, broadest at the base, smaller 
ones decurrent, obtuse at the apex. Apex capped by a small 
ovate terminal pinnule, or sometimes truncate, formed by the 
union of two lateral pinnules, with a slight constriction in the 
middle. Ultimate pinnz evidently reaching a very consider- 
able length, at least 10 em. The pinnez are gradually reduced 
in length toward the apex of the frond, passing at last from 
small pinnze into pinnatifid and undulate pinnules. Rachis. 
round, depressed, strong, decurrent at its union with the 
rachis of next larger division. Pinnules alternate, close, larger 
ones more distant, open or oblique, sessile by the entire base, 
connate at the base in the smaller pinnules, free almost or 
quite to the base in the larger; decurrent, smaller ones promi-. 
nently so, larger ones having the basal lobe on the under side 
of the first lower pinnule attached in part to the rachis of the 
pinna, smaller pinnules ovate, larger elongate with obtuse 
apices; borders of the entire pinnules slightly rolled, of the 
lobate ones distinctly so; borders of the small pinnules entire, 
of the larger undulate, and of the largest constricted, forming 
ovate lobes. Constrictions forming the ovate lobes marked off 
by a thin depressed line running more than half way to the 
rachis. In the cast, this line is prominent, running as a 
raised line from the constriction between the lobe to near the 
midrib. As a result of the manner of development of the 
frond the pinnules vary exceedingly in size, according to their 
position. Although merely ovate lobes on the small pinne, 
they reach further down on the frond a length of 10 to 12 mm. 
The pinnules are about 3 mm. wide, elongate in shape, with 
an obtuse apex; lower on the fronds they reach a length of 
12 to 14 mm. with a width of about 4mm. The pinnules of 
this size have five or six ovate lobes on each side, the basal 
