o8 
SMITI-ISONIAN INSTITUTION 
I am figuring. It is notable always for the full rotundity of contour, the arms 
infolding closely over the margin of the tegmen, with slightly visible partitions, 
leaving exposed only a small disk in the center, in strong contrast to the wide- 
spreading roof of E. miUiganae. 
Horizon and locality. P>eech River formation, Niagaran ; Decatur, Wayne and Perry 
counties, Tennessee. 
Eucalyptocrinus sp. 
Plate 8, fig. ig 
A form from the Beech River formation, Decatur County, Tennessee, with cup once 
and a half wider than high, and unusually tumid plates, probably different from the other 
species. 
Eucalyptocrinus pernodosus new species 
Plate 9, figs. 1-4 
This species, from the uppermost Niagaran, stands out distinct from the 
others by its extremely low and broad cup, twice as wide as high, relatively 
enormous RR, and the high convexity of its cup-plates. In mature specimens, 
as in figs, i and 2, this goes to the extreme of nodosity, the plates being medially 
produced into spinous projections resemlfiing pegs. The crown is unusually 
elongate, exceeding the longest of E. inilligauae by 20 per cent, but this exces- 
sive length is strictly in the arms, which are also stout, with little taper, but 
folding over at the tips between the narrow partitions, which are thus left well 
exposed surrounding a relatively small median disk. This and the forms follow- 
ing are the only examples of the genus as yet found in this formation. In con- 
tour of cup the species may be compared with E. depressas of S. A. Miller, from 
the Racine dolomite, figured iu N. A. Crin. Cam., pi. 82, fig. 3. 
Horizon and locality. Decatur limestone, Niagaran; quarries above Perry ville, Ten- 
nessee. 
Eucalyptocrinus sculptilis new species 
Plate 9, figs. g-6a 
This companion species, from the same horizon as the last, is the reverse 
of it in most of the characters. Instead of the broad, low cup, it is here of the 
subturbinate type frequent in the genus, and in place of the striking convex or 
nodose elevation of the plates, there is an equally striking surface marked by a 
delicate sculpturing extending from the RR to the uppermost cup-plates. The 
singular appearance of the stem shown in fig. 5 is due to a peculiar spreading 
of the long nodal ossicles, exposing between them a greater number of short 
internodals. The structure is evidently similar to that seen in the Devonian 
Dolatocriiuis, as is fully explained and illustrated in my paper upon that genus. 
