398 THE CRINOIDEA CAMERATA OF NORTH AMERICA. 
as no figure is given, and the description is insufficient for identification, we 
are compelled to ignore it for the present, Even the figure given by Whit- 
field (Mem. Amer. Mus. Nat. Hist. N. York, Plate 1, Figs. 23 and 24), made 
from a weathered specimen, does not aid us in distinguishing the form. 
Eretmocrinus cloelia Hatt. 
Plate XXXVI. Figs. La, b. 
1861. <Actinocrinus clelia— Haut; Prelim. Deser. of New Spec. of Crin., p. 1, and Bost. Journ. Nat. 
Hist., Vol. VIL., p. 266. 
1873. Batocrinus (Eretmocr.) clelia— Manx and Wortuen; Geol. Rep. Iinois, Vol. V., p. 368. 
1881. Eretmocrinus clelia —W. and Sp.; Revision Palexocr.; Part JU jos a 
A little larger than the preceding species. Calyx about as high as wide, 
broadly truncated at the bottom, the sides of the dorsal cup gently expand- 
ing to the arm bases. Plates spinous, subspinous or nodose; the suture lines 
slightly depressed. 
Base short ; the plates distinctly angular at their upper faces; the bottom 
broadly truncate and perfectly flat, except the central part which is slightly 
excavated for the reception of the column; the suture lines deeply grooved. 
In some specimens there is a longitudinal groove following the median line 
of the basals, which makes the base appear hexapartite, especially if the 
respective parts, as in some cases, are extended outward into spines. Radials 
of moderate size, wider than long, the upper face concave, the surface cov- 
ered with a transverse spine or node. Costals rather large; the first quad- 
rangular, convex at the upper and lower faces; the second a little wider and 
pentangular. Distichals two or three. The anterior ray, when with but 
sometimes also 
two arms, has three distichals, the two antero-lateral rays 
one or both posterior rays—only two, and the upper plate supports two 
short palmars. In the majority of specimens, both posterior rays have but 
three arms, and only the distichals next to the anal side bear palmars, The 
brachials throughout the calyx are provided with a sharp node or short 
spine; the plates of the two upper rows are in contact laterally.. Arm 
facets large, lunate, and directed laterally ; the ambulacral openings arranged 
in groups, the interspaces between the rays being larger than those between 
their subdivisions. Respiratory pores large. Arms sixteen to eighteen, 
stout, rather long, and incurving. Near the calyx they are rounded on the 
back, but gradually increase as they flatten to twice the diameter at the 
lower end, and the plates to twice their length. Each alternate plate at 
