SELLARDS.| Fossil Plants, Upper Paleozoic, Kansas. A421 
a cancellate network, somewhat hexagonal, transverse width 
about twice the vertical, acutely angled at the sides, rounded 
above and below, projecting from the surface slightly, varying 
in size according to position whether close to or distant from 
the regular enlargements of the branch, and according to the 
size of the branch, on the large branches becoming: indistinct 
or absent. Leaf-scar angled at the sides, rounded below, always 
more or less emarginate above, inclined upward, facing up- 
ward and outward, the upper edge dipped slightly under the 
next foliar cicatrice above, the lower side projecting a little 
over the one below, varying in size according to the position on 
the branch and the size of the branch, from very small, 2 mm. 
in longitudinal width to 7 or 8 mm., separated in the spiral and 
transverse direction from 1 or 2 mm. to 2 or more em.; the 
central cicatricule located above the middle of the scar, ele- 
vated, transversely broadly linear; lateral cicatricules just at 
the side of the vascular point nearly straight and linear in the 
vertical direction, or curved, enclosing the vascular point as in 
parentheses. Cortex thin, marked on the large branches by 
more or less undulating longitudinal striz; lateral cicatricules 
of the decorticated surface small, linear, parallel in a vertical 
direction. Vascular point on well-preserved specimens show- 
ing aS a point midway between the cicatricules, decorticated 
surface striated. Continuity of the branch interrupted by regu- 
larly occurring enlargements, the distance between which be- 
comes gradually less approaching the apex; fructifications 
_ probably borne on cones attached to these enlargements. 
Formation and locality: Le Roy, Lawrence and Scranton 
shales. 
Sigillaria brardii coriacea D. W. 
The variety which Mr. David White has separated under the 
varietal name coriacea occurs rather abundantly in the Le Roy 
shales at the coal-mines formerly operated at Blue Mound. 
Sigillaria camptotznia Wood. 
The widely distributed species S. camptotenia has been iden- 
tified from the Le Roy shales at Blue Mound, near Lawrence, 
and is reported by White from the Chanute shales (Bull. U. 
S. Geol. Survey No. 211). 
Sigillaria sp. Pl. LI, fig. 2. 
Trees large; cortical surface finely rugose longitudinally; 
cortex thin, marked on the shale by a thin carbonaceous layer 
