PERMIAN CRINOID FAUNA FROM TEXAS 627 
DELOCRINUS MAJOR N. Sp. 
(Plate I, Figs. 6, 7) 
Description.—Dorsal cup large, basin-shaped, with a deep basal 
excavation, the surface of the plates flat, the sutures flush with the 
surface, not depressed in furrows. The dimensions of the type 
specimen are: diameter of dorsal cup, approximately 4o™™, height 
of same 14™™. Underbasals small, nearly covered by the column, 
situated in the bottom of the basal excavation. Basals large, a 
little longer than wide, their proximal portion to the extent of nearly 
one-half of the total length of the plates inflected to form the sides 
of the basal excavation, the distal portion forming the lower part 
of the flaring sides of the cup, four of them angular at their distal 
extremities, the posterior one truncated to support the anal plate. 
Radial plates large, nearly twice as wide as high, pentagonal in out- 
line, forming more than half of the flaring sides of the cup. Anal 
plate higher than wide, hexagonal in outline, resting between the 
_ posterior basals upon the truncated distal extremity of the posterior 
basal and extending for nearly one-half its height above the level of 
the radials, its surface convex along the median longitudinal line 
and concave transversely along the line joining the two lateral 
angles. Radianal plate absent. 
Remarks.—This species is described from an incomplete dorsal 
cup, the type specimen being approximately one-half of an indi- 
vidual broken vertically. The portion of the specimen preserved 
is undistorted and retains the posterior side, so that all the essential 
characters are preserved. ‘The species is especially characterized by 
its large size, it being nearly twice as large as the Pennsylvanian 
species which usually represent the genus. In general form it 
resembles the common D. hemisphericus but has much straighter 
flaring sides and a proportionally larger anal plate. 
DELOCRINUS TEXANUS N. Sp. 
(Plate I, Figs. 12, 13) 
Description.—Dorsal cup basin-shaped, broadly excavated at the 
base, the surface of the plates convex, the sutures slightly impressed, 
especially the lateral sutures of the basal plates and at the distal 
extremities of the same plates. ‘The dimensions of the type speci- 
