124 GEOLOGICAL SURVEY OF THE TERRITORIES. 
LECYTHIOCRINUS OLLICULZFORMIS White. 
Plate 35, figs. 2 a and 6b. 
Lecythiocri ea olliculeformis White, May, 1880, Proc. U. 8. National Museum, vol. ii, 
p. <o 
Body small, subovoid or pot shaped, higher than broad, broadest a 
little below the middle, composed of thin pieces; base convex; basal 
pieces rather small but not minute; subradial pieces larger than any of 
the others, their vertical length a little greater than half the full height 
of the body and greater than their breadth, not materially varying in 
size or shape among themselves; first radial pieces smaller than the 
subradials but larger than the basals, broader below than above, height 
and greatest breadth about equal; at top, on both sides of the small 
prominent arm-facet, the upper border of each first radial is bent inward, 
constricting the already narrow interbrachial space at top, which was 
probably covered by a dome of minute pieces. Sutures not impressed, 
surface to ordinary vision apparently smooth, but a good lens shows it 
to be very finely granular. 
Height, 9 millimeters; breadth, 74 millimeters. 
Position and locality—Upper Coal- measure strata, 630 miles west of 
Humboldt, Kansas.” The type specimen is among the collections of 
the National Museum, but record of the collector's name has been 
destroyed by accident. 
Genus EUPACHYCRINUS Meek & Worthen. 
EUPACHYCRINUS PLATYBASIS White. 
Plate 33, fig. 8 a. 
Eupachycrinus platybasis White, 1876, Powell’s Rep. Geol. Unita Mts., p. 108. 
Calyx nearly flat; basal pieces small, concealed by the first joint of 
the column, which is proportionally large; subradial pieces rather 
small or of medium size; their inner ends also covered by the first joint 
of the column, all of nearly the same size and shape, judging from the 
visible portion of them; but the posterior one and the next adjacent on 
its right are a little modified in shape by the proximity of the anal 
series; first radial pieces much broader than long, broadly convex from 
side to side, and more abruptly convex from within outward ; all of them 
ending with a regular obtuse angle between the subradial pieces, ex- 
cept the left posterior one, the angle of which is truncated or made a 
little irregular by the interposition of the first anal piece; first anal piece 
apparently nearly as large as the posterior subradial between which 
and the left posterior first radial piece it is interposed, reaching nearly 
as far inward as the first radial piece does, and at which inner point it 
ends with an acute angle; remainder of the anal series unknown; plates 
all massive, so that the body cavity, as inclosed by the calyx, is ‘exceed- 
ingly small. Sutures all linear. Surface nearly or quite smooth. Re- 
mainder of structure unknown. 
Diameter of calyx 18 millimeters, including the full thickness of the 
first radial pieces; height, 5 millimeters. 
This species differs from the typical forms of the genus in the extreme 
flatness of the calyx, but the number, arrangement, and general charac. 
ter of the pieces composing its calyx leave little or no doubt as to the 
propriety of referring it to the genus Hupachycrinus Meek & Worthen. 
