Species of the Keokuk Group, 



185 



for one-half the remaining distance, thence upward the expsAision begins 

 again and is continued to the aperture. 



The reticulum is smooth and in its general aspect like that of C. gloriosa 

 and O. QLaypolei. Over the upper portion of the cup there ia a series of 



Figure SS. Splculea of Cleodietya Stohri, x400. 1, larg* b*zact ; 2, extremity of rhcbd or hezact ; S, echlnsU 

 bexact ; i, extremity of Urge echlnate hezact; 5, umbel ; (, mlcrumbel. (J. M. C.) 



horizontal bands of spicules which are more conspicuous than the rest and are 

 not crossed by vertical bands of corresponding size at regular intervals. 



FiouRE s;. Spicules of CUocUetya XohH, z400. 1, 1, hezaeU ; i, •mall cleme ; 4, rhabd ihowlns concentric layerl ; B, «, umbel 

 and mlcrumbel. (J. U. C.) 



Above the basal expansion the vertical bundles of spicular rods or rhabds 

 lose their close definition and are spread over the quadrules somewhat to the 



