272 The American Geologist. November, i90t. 
The greatest width of the calyx is a Httle below the top of 
the radial ring. There is little convexity to the plates. The 
surface of all the plates is very finely granular and scarcely dis- 
cernible low ridges pass from plate center to plate center. 
Locality and horizon same as the last. 
Cordylocrinus? dubius, n. sp. 
Plate XVI. Figs. 20, 21, 22 X 2. 
This little crinoid has nuich the appearance of ]\Iacrostylo- 
crinus both in outline and ornamentation, Iwt differs in the 
shortness of its costals, anchylosis of its basals and the pres- 
ence of but one interradial to Mie area on the doral side. 
There is no basal excavation for the column but a slight ele- 
vation, almost a rim. The columnar canal is apparently round 
and minute. The use of a lens and a strong light fail to dis- 
close interbasal sutures. It is therefore probable the basal 
plates are nnchylosed, forming a broad Imt not deep cup. 
Five large radials, broader than long, rest upon the basals. 
Near the top of the radial there is a thickening of the test 
that throws nearly half of the radial width into a fold form- 
ing a lunular scar above on which rests a short, very small, 
quadrangular first costal. Of less width and no greater 
length is the second costal, a bifurcating plate. The upper 
part of the depressed area between the radial folds is oc- 
cupied by a single anal plate that bends over on the ventral 
side. 
The dorsal plates arc ornamented l)y hue lines that follow 
the basals and radials longitudinally aiid cross the depressed 
areas from radial lobe to radial lobe. One-half of the 
dorsal surface is preserved and is composed of rather strong 
ambulacral ridges and depressed triangular interamlnilacral 
areas made up of a few plates. The ambulacral ])latcs are 
small and apparently form double series. 
The anal area dift'ers little from the interradial sjiaces, 
with no apparent difference on the dorsal surface. There is 
no apparent ornamentation on the interambulacral spaces but 
the ambulacral ridges seem to be corrugate. 
Locality and horizon same as the last. 
