348 Glyptocrinus FormJiellL 



around the basal margin, A convex elevation rises on the dorsal mar- 

 gin, at the posterior end, crosses, parallel with the border, to the basal 

 margin, and running along the basal margin, gradually enlarging, ter- 

 minates in a somewhat tuberculous elevation at the anterior end. 

 Another convex elevation rises on the dorsal margin, within the pos- 

 terior third, and crossing the valve at right angles, terminates within 

 the semi-elliptic curve formed by the preceding elevation. Tubercle 

 rises like a little cone near the dorsal margin and line of the anterior 

 third. 



Length of shell about 0.08 inch, breadth about 0.05 inch. 



Found near Wilmington, in Clinton county, Ohio, in the upper part 

 of the Cincinnati Group, at about the elevation of Dendrocrinus poly- 

 dadylvis. 



The specific name is given in honor of Mr. J. M. Richardson, of Wil- 

 mington, the collector, who well deserves the compliment for his devo- 

 tion to the science, energy as a collector, and unbounded generosity in 

 the distribution of specimens among his paleontological friends. 



Glyptocrinus 'Fornshdli — (S. A. Miller). 



Fig. W— Glyptocrinus Fomshelli. 



Cup obconoidal, about one and a half times as high as wide, 

 and tapering to the column. Basal pieces, five, pentagonal in outline, 

 wider than high. First radial pieces much larger than the basals, 

 heptagonal, nearly as wide as long, and inserted in the angles pro- 

 duced by the junction of the basal pieces. Second radials octagonal, 



