20 Cincinnats Society of Natural flistory. 
between the under sloping sides of the tertiary radials; the probos- 
cis is broken off in our specimen at the top of the folded arms. 
Found in the Keokuk Group at Crawfordsville, Ind., and now 
in the collection of Wm. F. E. Gurley. 
BATOCRINUS JUCUNDUS, Nl. Sp. 
Flate IV., Fig. 5, azygous side with arms; Fig. 6, symmetrical view 
with arms removed, showing proboscts- 
Species rather small; calyx globose, nearly as wide as high, 
height of calyx a little more than height of dome to the base of the 
proboscis; arm bases very slightly projecting, and arm openings 
projected upward; surface of the plates smooth or finely granulous, 
more or less convex or tumid; basals three, short, upright, and 
forming a pentagonal ring around the column; first primary radi- 
als much wider and larger than the second and third together; on 
some specimens there is an elongated, transverse tubercle on each 
one, the upper face is broadly truncated for the inferior face of the 
succeeding radial, and the upper sloping sides support the first 
interradials; ‘second primary radials quadrangular one-half wider 
than long; third primary radials wider and larger than the second, 
pentagonal or hexagonal, the lower lateral sides spreading so as to: 
give the greatest width at the middle part of the plate or at the 
angles made with the upper sloping sides; the upper sloping sides 
support the secondary radials; secondary radials 2x10 wider than 
long, the upper the larger, but both of them variable in size and 
shape; six of them have upper sloping sides for tertiary radials, 
while four of them bear only a single tertiary radial; each second 
secondary radial in the ray opposite the azygous side bears a single 
arm and one of the lateral secondary radials on each side bears a 
single arm; there are, therefore, only sixteen arms; a single plate 
follows each tertiary radial, and above this the arm is constructed 
of two series of small plates alternately arranged; the arms are 
rounded on the outer side, gradually tapering and bear numerous. 
long pinnules, composed of comparatively long pieces; regular 
interradials in some areas two and in others three, the first one 
polygonal and larger than any other plate above the first primary 
radials; when it is followed by two interradials they are together no 
larger than a single secondary interradial; azygous interradials. 

