66 
SMITHSONIAN INSTITUTION 
Anisocrinus greenei (Miller and Gurley) 
Plate 20, figs. i 6 , i/ 
Lecanocrinus greenei Miller and Gurley, Bull. 8, Illinois St. Mus., 1896, p. 52, pi. 3, fig. 28. — Anisocrinus 
greenei, Springer, Crinoidea Flexibilia, 1920, p. 163, pi. 10, figs. 8, 9. 
Louisville limestone ; Jefferson County, Kentucky ; Beech River formation, Decatur 
County, Tennessee. 
There are also figured for comparison : 
Anisocrinus oszvcgocnsis (Miller and Gurley), plate 20, figure 18, from Crinoidea Flexi- 
bilia, plate 10, figures ya-c. Oswego, Illinois. 
Anisocrinus angelini Wachsmuth and Springer, plate 20, figure 19, from Crinoidea Flexi- 
bilia, plate 10, figures 4fl, h. Gotland, Sweden. 
HORMOCRINUS Springer 
Plate 22 
Hormocrinus Springer, Crinoidea Flexibilia, 1920, p. 160. 
Rays above radials separated by solid plates followed by perisome. No RA. 
Anal X and large iBr followed by others abreast and perisome, or directly by 
perisome. Arms dichotomous. 
Genotype. Centrocrinus tennesseensis Worthen. 
Distribution. Silurian ; America, England, Gotland. 
Hormocrinus tennesseensis (Worthen) 
Plate 22, figs, i-gb 
Centrocrinus tennesseensis Worthen, Geol. Surv. Illinois, 8, 1890, p. 96, pi. 14, fig. i. — Hormocrinus ten- 
nesseensis, Springer, Crinoidea Flexibilia, 1920, p. 167, pi. 14, figs. 1-5. 
Beech River formation; Decatur County, Tennessee. 
ASAPHOCRINUS Springer 
Plate 20 
Asaphocrinus Springer, Crinoidea Flexibilia, 1920, p. 174. 
Rays above radials separated by perisome only. RA rhombic, obliquely to 
left of r. post. R. Anal x followed by others passing into a tube. No iBr, areas 
filled with perisome, sometimes not exposed. Arms dichotomous. 
Genotype. Asaphocrinus basslcri .Springer. 
Distribution. Silurian ; America. 
Asaphocrinus bassleri Springer 
Plate 20, figs. 20, 21 
springer, Crinoidea Flexibilia, 1920, p. 178, pi. 10, figs. 10-14. 
Beech River formation ; Decatur County, Tennessee. 
