CRINOIDS. 221 



Scaphiocrinus :^ hemisphericus Meek, 1872: U. S Geol. Sur. Nebraka, p. 



147, pi. V, tig. 1. 

 Ceriocrinus hemisphericua Wachsmuth & Springer, 1886 : Proc. Acad. Nat. 



tici., Phila., p. 264, 

 Delocrinus hemisphericus Miller & Gurley, 1890: Jour. Cincinnati Soc. 



Nat. Hist., vol. XIII, p. — , pi. ii, figs. 8-9. ( Reprint, p. 12.) 

 Delocriyl^ls missoui'iensis M.WXqv & Gurley, 1890 : Jour. Cincinnati Soc. Nat. 



Hist., vol. XlII, p. 9, pi. ii, figs. 11-13. (Reprint.) 



Calyx small, smooth, basin-shaped ; and differing from an 

 Eupachycrinns in having but a single azygous plate. 



Horizon and locality. — Upper Carboniferous, Upper Coal 



Measures: Lexington, Columbia (Boone County), Kansas 



City. 



Agassizocrinus dactyliformis Troost. 



Agassizoci-inus dactylifor^mis Troost, 1850: Proc. Am. Ass. Ad. Sci., p. 60. 

 Agassizocrinus dactyliforinis Shumard, 1853 : Marcy's Rep. Red. River of 



Louisiana, p. 199. 

 Agassizocrinus dactyliformis Hall, 1858 : Geol. Iowa, vol. I, p. 685, fig. 113. 



Calyx obconical, with curved sides. Infrabasals large, 

 heavy, firmly united. Basals large ; radials small, wider than 

 high. Posterior side as in Cromyocrinus in the arrangement 

 of the plates. 



Horizon and localities. — Lower Carboniferous, Kaskaskia 

 limestone : Chester ( Illinois ). 



Edriocrinus pocilliformis Hall. 



Plate XXX, fig. 7. 

 Edriocrinus pocilliformis Hall, 1859: Pal. N. Y., vol. Ill, p. 121, pi. v, 



figs. 8-12. 

 Edriocrinus pocilliformis Meek & Worthen, 1868: Geol. Sur. Illinois, voK 



III, p. 370, pi. vii, figs. 5a-b. 



Dorsal cup obconical; base slightly wider than high, 

 rounded below and a little oblique, faintly scalloped above. 

 Kadials slightly longer than the base, longer than wide. Anal 

 plate somewhat narrower than the radials. Surface smooth. 



Horizon and localities. — Upper Silurian, Lower Helderberg ? 

 limestone: Bailey's Landing (Perry county). 



