214 CRINOIDS. 



Woodocrinus elegans ( Hall ). 



Plate XX vi, flg. 5.'° 



Zeacrinus elegans Hall, 1858 : Geology Iowa, vol. I, p. 547, pi. ix, figs. 1-2, 

 Zeacrinus troostianus Meek & Worthen, 1860 : Proc. Acad. Nat. Sci., Phila., 



p. 390. 

 Zeacrinus scoparius Hall, 1861 : Boston Jour. Nat. Hist., vol. VII, p. 305. 

 Zeacrinus sacculus White, 1862: Proc. Boston Soc. Nat. Hist., vol. IX, 



p. 12. 

 Zeacrinus elegans Wachsmuth & Springer, 1879 : Proc. Acad. Nat. Sci., 



Phila. ( Revision, p. 128). 

 Woodocrinus elegans Wachsmuth & Springer, 1886: Proc. Acad. Nat. Sci., 



Phila., p. 166. 

 Zeacrinus commaticus Miller, 1891 : Geol. Siir. Missouri, Bui. 4, p. 36, pi. 



V, figs. 10-11. 



Crown elongate pyriform. Dorsal cup shallow, basin- 

 shaped, with a rounded concavity for the reception of the stem, 

 and occupied by the infrabasals ; basals relatively large. Anal 

 side similar to Poteriocrinus. Eadials rather large. Arms 

 bifurcating, broad, flattened outwardly, and closely appressing 

 one another ; arm-plates short, very wide, rectangular. Column 

 small, circular in cross-section. 



Sorizon and localities. — Lower Carboniferous, Lower 

 Burlington limestone: Louisiana. 



Woodocrinus pocillum (Miller) 



Zeacrinus pocillum Miller, 1891: Geol. Sur. Missouri, Bui. 4, p. 28, pi. iv, 

 tigs. 1-2. 



Horizon and localities. — Lower Carboniferous, Keokuk 

 limestone: Boonville. 



Zeacrinus magnoliaeformis (Owen & Shumard) . 



Cyaihocrinus magnolicefor7nis Owen & Shumard, 1846 : Researches Garb. 



Rocks Kentucky. 

 Zeacrinus magnoliceformis Troost, 1850 : Gat. Crinoids Tennessee. 

 Zeacrinus magnoliceformis Hall, 1858 : Geology Iowa, vol. I, p. 684. 



Yery similar to certain species of Woodocrinus, but has 

 much smaller infrabasals and basals and much larger radials. 



Horizon and localities — Lower Carboniferous, Kaskaskia 

 limestone : Chester ( Illinois ). . 



