12 
AUG. F. FOERSTE 
. Similar coiled crinoid stems, evidently belonging to the same 
species, have been found recently also at the large quarry north- 
west of the railroad station, at Centre ville, Ohio. 
Disjointed columnals (plate II, figs. 5 A-C) are very common 
near the top of the Brassfield limestone, both in Ohio and in 
eastern Kentucky. The maximum size attained by these col- 
umnals is 25 mm. Most of them do not exceed 15 mm. in 
width. Columnals between 15 and 25 mm. in width usually 
are almost circular in outline with little evidence of crenulation. 
Smaller columnals frequently are crenulated; some of the smaller 
specimens are pentagonally lobed; when they are both lobed 
and crenulate they frequently are very pretty and attract at- 
tention as beads. In both of the coiled columns found so far 
the outlines of the columnals are moderately crenulated but not 
pentagonal in outline. Whether the more or less pentagonal 
columnals represent a different species is unknown at present. 
On many of these columnals it is possible to recognize five equally 
distant, radiating, narrow color lines suggesting former sutures, 
and indicating the pentamerid origin of the columnals. 
The radiating striae on the articulating surface of the artic- 
ulating columnals, described above, number 10 or 11 in a dis- 
tance of 1 mm. They correspond closely in appearance with 
the striae on the articulating surfaces at the base of the calyces 
of the two species of crinoids described next. Both of these 
species occur at the top of the Brassfield formation in the area 
southeast of Byron, about 7 miles northwest of Xenia, Ohio. 
Both are found at about the same horizon as the coiled stem 
described from the top of the Brassfield hmestone, 1 mile north- 
east of Wilberforce. Both are very similar in the size and the 
outline of the first three circles of plates, and apparently even 
in the degree of development of the very low but broad radiating 
ridges ornamenting the plates. They differ chiefly, as far as 
the calyces are known at present, in the shape of one of the 
plates in the first or basal circle. In the first species here de- 
scribed, (plate II, figs. 6 A-E) the top of one of the basal plates 
is truncated, indicating the position of the anal side of the calyx. 
In the second species all of the plates belonging to the first circle 
