134 
SMITHSONIAN INSTITUTION 
Cyathocrinus decatur new species 
Plate 31, fig. 2 
A complete crown, with elongate cup perfectly smooth and rounded. IBB 
elongate, probably 5, anal side not exposed. BB large; RR small, facets dis- 
tinctly facing outward, making arm-bases horizontal. Arms stout, with three 
or four wide-angled bifurcations; brachials longer than wide. Stem wide, the 
full width of base, with columnals lengthening distally until as long as wide. 
H orison and locality. Beech River formation, Niagaran ; Decatur County, Tennessee. 
Cyathocrinus cf. striolatus Angelin 
Plate SI, figs- 4-7 
Cyathocrinus striolatus Angelin, Icon. Crin. Suecc., 1878, p. 23. — Bather, Crin. Goth, 1893, p. 136, pi. 7, 
figs. 218-221. 
Dorsal cup forming a truncate cone with nearly straight sides ; plates folded 
into sharp ridges radiating from plate to plate, leaving distinct pits at the cor- 
ners ; surface smooth to tubercular. IBB fairly high, with lower margin slightly 
raised into a rim, forming a broad, truncate base. BB large. RR large with 
fairly wide, curved facets. Anal x small, scarcely half the size of RR. Axial 
canal large. 
I have referred the four specimens here figured to the Gotland species with considerable 
confidence, but the arms if known might disclose a specific difference. In three of them the 
surface markings are sharp, but in the fourth they are smoothed by erosion. The IBB are not 
uniform in size, one being usually smaller than the others, and in the specimen of figure 6 
there are six IBB, thus indicating a tendency to instability in this element. 
Horizon and locality. Laurel limestone ; St. Paul, Indiana. 
Cyathocrinus wilsoni new species 
Plate SI, figs, ja 
Distinguished by its conical calyx, expanding from a very small column- 
facet, and the great length of its deeply rounded brachials; these are not en- 
tirely uniform, and some are more than twice as long as others. RR facets 
deeply excavate; arms bifurcating widely at very short intervals in lower part, 
some with only one brachial. IBB 5, small, and RR much larger than BB. 
Anal X of true Cyathocrinid type, but smaller than usual. 
Horizon and locality. Laurel limestone ; St. Paul, Indiana. Named for the late Dr. 
Herrick E. Wilson, who collected the type. 
