Oct., 1907. New Crinoips — SLocom. 293 
The natural cast is similar in form and proportions to the outside 
_of the calyx without the radial and basal facets. The transverse 
ridge near the arm bases is more prominent and the inner surface 
of the plates is slightly beveled towards the edges, so that the position 
of the sutures is indicated on the casts by indistinct ridges. 
Basals three, two pentangular and equal, the other smaller, quad- 
rangular. Together they forma cup wider than high and witha small 
circular base. Radials five, about equal in size, three pentangular, 
two quadrangular. The radials are inflected on a line with the lower 
part of the articular facet forming an obtuse angular transverse ridge. 
The articular facets are small, occupying about one-third the width 
of the plates. They are circular in outline with a deep ventral groove. 
One axillary costal is attached to each articular facet. Column, as 
indicated by the basal facet, round with a central circular canal. 
Arms and ventral disc not preserved. 
The type specimen (Mus. No. P 8895) consists of a natural cast of 
the dorsal cup and the associated natural mold nearly complete. 
Figures 5 and 6, Plate LXX XVI, are drawn from a rubber impression 
of the natural mold. This species is so different in its general form 
from any other species of this genus that comparison seems superfluous. 
The specific name is proposed in honor of the wife of the writer. 
Locality: Collected by the writer in the Niagaran limestone of the 
spoil heaps along the Chicago Drainage Canal near Lemont, Illinois. 
Family BATOCRINIDAL, 
HABROCRINUS Angelin. 
Calyx obconical to urn-shaped; composed of thick, more or less 
ornamented plates. Arms, two to each 
ray; uniserial, long, heavy and simple 
throughout. Base monocyclic. 
Basals three, equal. . Radials five, 
each followed by two costals. Distichals 
two to six to each ray leading up to the 
arms. First anal plate large, situated 
between the two posterior lateral radials. 
It is followed by three plates in the sec- 
ond row and five in the third. The anal 
interradius is much wider than the other 
interbrachial areas. 
The genus Habrocrinus together with Pionocrinus was created in 

Fig. 8. Diagram of Habrocrinus. 
