310 Cincinnati Society of Natural History. 
ACTINOCRINUS COPEI, Nn. Sp. 
Plate atta 2, view of the azygous side, natural size ; fig. 2a, view of the opposite or 
posterior side, natural size; fig. 2b, view of the vault or summit. 
Body broadly turbinate below the arms, slightly truncate at the base, 
and depressed convex on the summit. Basal plates about three times 
as wide as high. First radials wider than high. Second radials wider 
than high. Third radials wider than high, and supporting upon each 
of the upper sloping sides a single secondary radial. The secondary 
radials are short and broad, and support upon the upper sloping sides 
a single brachial plate from which the free arms arise. Arms twenty. 
The first regular interradial is about the size of the third radials, it 
is succeeded by two smaller plates, and these by one or two plates rest- 
ing between the secondary radials. In the latter respect there is a 
difference in the interradial spaces. The first azygous interradial is of 
about the same size as the first radials. It is succeeded by two plates» 
and these by three, above which there appears to be only a single 
plate. 
The plates in the calyx are about the same in number and position 
as in A. dalyanus, but they are wider in proportion to their height. 
The summit is covered with numerous conical polygonal plates, with 
the exception of a large subcentral aperture. Broad shallow depres- 
sions appear near the margin, which become well defined channels be- 
tween the arms, especially upon the azygous side. A cast would no 
doubt show more strongly these depressed interbrachial spaces. 
The surface of the calyx is very highly ornamented by stellate 
ridges and sculptured depressions, with verrucose and granulous 
elevations. It is not surpassed in ornamentation by any species be- 
longing to the genus. 
The specific name is in honor of the distinguished naturalist, to 
whose collection it belongs. : 
DoRYCRINUS LINEATUS, N. Sp. 
Plate VILI., fig. 3, view ‘of the azygous side; fig. 3a, view of the posterior or side apposite’ the 
azygous side, natural size. 
Body of medium size, turbinate below the arms, truncate at the base, 
summit depressed, conical, with a prominent subcentral spine. 
Basal plates twice as wide as high, and extending below the facet 
for the attachment of the column. First radial plates a little wider 
than high, three hexagonal, and two heptagonal. Second radials less 
than half the size of the first, twice as wide as high, and quadrangular 
