40 Cincinnati Society of JSTaturcd History. 



EuPACHYCRiNUS GERMANus, n. sp. (Plate VIII., fig. 3, anterior view.) 



[Ety. — Germanns, near a-kin, come of the same stock; from its resemblance to E. spartarius.] 



Volumn. — Column round. 



Body. — Body bowl-shaped, deeply sunken for the reception of the 

 column, constricted at the arm bases, and much resembling E. .spartarius, 

 though less robust, plates less convex, and sutures not so well defined. 



Basals. — Basals small and deeply sunken in the depression of the 

 under side. Shape not determined. 



Suhradials. — Subradials large, curving upward upon the outside and 

 into and upward in the concavity of the under side of the bod}', where 

 each of them has a mesial notch or depression. The superior sloping 

 sides of four subradials support first radials, but the left anterior sub- 

 radial also supports the first azygos plate. The anterior subradial 

 supports upon its right superior side a first radial, upon its left the first 

 az^'gos plate, and upon its upper slightly truncated edge the second 

 azj^gos plate. 



First radials. — The first radials are pentagonal, and a little wider 

 than high. The upper strongly truncated side is the longest. The two 

 inferior sides of each rest between the superior sloping sides of the sub- 

 radials below, except as to the left anterior first radial, which is sup- 

 ported upon its right inferior side by the first azygos interradial. The 

 other two sides join the adjacent first radials, except as to the two an- 

 terior plates. The left anterior one is almost if not quite quadrangu- 

 lar, for the third azygos plate barely touches it. 



Second radials. — The second radials are pentagonal, not quite as 

 large as the first radials, and nearlv twice as wide as high. The long- 

 est side of each articulates with a first radial, the shortest sides unite 

 with the adjacent second radials except as to the two which join the 

 azygos plates. The posterior second radial bears upon each of its su- 

 perior sloping sides an arm, while each of the other four second radials 

 bears on one side an arm, and upon the other a third radial bearing two 

 arms; thus furnishing to the crinoid fourteen arms. 



Third radials. — The four third radial pieces are each pentagonal, and 

 nearly as high as wide. 



Azyyos interradials. — The first or lower azygos plate is pentagonal; 

 the two inferior sides resting upon sub-radials, the left superior side 

 supporting a first radial, the right superior side the second Vk,zy^o?. 

 plate, and the upper side the third azygos plate. The second plate is 

 hexagonal. It rests upon the anterior sub-radial, the inferior sloping- 

 sides are supported between the first azygos plate and a first radial, 

 the superior sloping sides between a second radial and the third azygos 



