340 THE CRINOIDEA CAMERATA OF NORTH AMERICA. 
narrow at the extremities, composed of very short pieces; the three or four 
proximal ones simple, the upper rather deeply interlocking. Ventral disk 
minus the partitions comparatively high, owing to the plates of the first row 
which are unusually large; the plates of the second row are shallow funnel- 
shaped, and those of the third shorter and very heavy. The plates of the 
fourth row, which form the upper end of the tube, as well as of the com- 
partments, enclose six or eight moderately large plates, and these again 
a little short cone of eight or ten irregular pieces, which decrease in size 
inward, and close the anus more or less tightly. 
Horizon and Locality. — Niagara group; Waldron and Hartsville, Ind., 
and Chicago, IIls. 
Types in the State Cabinet of Natural History at Albany. 
Remarks. — The name Eucalyptocrinus Elrodi was proposed by Miller for 
a specimen from Hartsville, Ind., in which the nodes upon the surface are 
exceedingly regular, and not in part confluent as usually in this species, 
agreeing in other respects with the specimens from Waldron, which Hall 
erroneously referred to LH. celatus. The latter species, as represented at 
Lockport and Rochester, N. Y., its typical localities, is much more elongate 
than the specimens from Indiana; the dorsal cup is higher and obconical, the 
radials longer and more nodose at the lower end, the partition walls thinner, 
their outer edges convex instead of concave, and there is a small tube rising 
above the walls of the compartments. Whether under these circumstances 
it is proper to accept for the typical form Miller's name £. Lredi, which he 
separated from it on account of slight modifications in the ornamentation, 
may be questioned; but we propose to do so to avoid further synonomy. 
We therefore include in this species not only Miller’s special form, but also 
the specimens from Waldron and Hartsville, figured by Hall under Z. ce/latus, 
and also Miller’s £. subglobosus, which latter we regard an immature form 
of this species. 
Eucalyptocrinus ornatus Hatt. 
Plate LXXXII. Fig. 10. 
1867. Hatt; 20th Rep. N. Y. State Cab. Nat. Hist., p. 329, Plate 11, Figs. 4 and 5. 
1885. W. and Sp.; Revision Paleocr., Part III., p. 134. 
The dorsal cup, the only part known of this species, was described from 
internal casts and gutta percha impressions, taken in the natural mould of 
the exterior. It is depressed, as wide as high, the radials directed hori- 
