FOSSILS OF THE ST. LOUIS GEOUP. 537 



instead of upward,) upon which all the arms bifurcate 

 Hiram, the lower piece in each bifurcation being more than 

 twice as long as the succeeding ones. The third radial on 

 the anterior ray is not protuberant, and smaller than those 

 in the other rays, supporting four thin, arm-plates, above 

 which there is a thick protuberant axillary piece upon 

 which the ray bifurcates as in the others. First anal piece 

 rather long and narrow, hexagonal, and resting upon one 

 of the small basal pieces. Second anal, as far as can be 

 seen, about as wide as long, and hexagonal. Surface of all 

 the plates finely rugose. 



This species bears some resemblance to Cyatli. forealis, Yandell and 

 Slmmard, Contrib. to the Geol. of Ky., but differs in the flat disc-like 

 and pentagonal form of the body, as well avS in the form and arrange- 

 ment of its arms. 



Locality and position Cumberland county, Ky. Lower Carbonifer- 

 ous. For the line specimen from which the foregoing description was 

 drawn I am indebted to Prof. E. T. Cox, now State Geologist of In- 

 diana. 



GEXUS DICHOCRIXUS, Munster. 

 DICHOCRESTJS CORXIGERUS, Shuiiiard I 



PL 20, Fig. 6. 

 Dichocrinut comigerus, SHUMAKD. Trans. St. Louis Acad. of Sci., 1860, p. 72. 



This form, which seems to be identical with Shumard's species above 

 cited, was found in the upper bed of the St. Louis group near Boseclare, 

 Ilardiu county, 111. 



GEXUS GRAXATOCRIXUS. 

 GRAXATOCEIXUS GLABER, M. and TT. 



PL 90, Fig. 11. 

 Granatocrinus glaber, MEEK and WORTHEX. Proceed. Acad. Xat. ScL. Phila., 1869, p. 91. 



BODY very small, pentagonal-subglobose, being some- 

 what wider than long, and rather broadly truncated below, 



69 



