AMERICAN SILURIAN CRINOIDS 
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Macrostylocxinus laevis new species 26 
Figs. 14, 15. Dorsal oblique views of two crowns, with strong biserial arms; calyx more or less 
crushed. 
16, 17, 18, 19. Lateral views of 4 calices, showing various contours ; surface in all smooth ; 
16 and 17 flattened. 
Beech River formation; Decatur County, Tennessee. 
Macrostylocxinus meeki (Lyon) 26 
Figs. 20, 21, 22. Post, ant. and basal views of three specimens lacking the striate ornament; show 
the broadly rounded calyx, sharp ridges following the radial series, and the wide IBr ; 
in 22 post, is at the right. 
23. A variant perhaps of different species, showing small size of arms. 
Beech River formation; Decatur County, Tennessee. 
Macrostylocxinus ornatus Hall 27 
Fig. 24. The type species ; a complete crown and stem with terminal root ; biserial arms and pin- 
nules; from the Rochester shale at Lockport, New York, collected by Frederick Braun. 
(?) Macrostylocxinus pustulosus new 26 
Figs. 25, 25a. Post, and dorsal views of the only specimen, having anal side like Macrostylocrinus, 
but radial facets more like the Platycrinidae. 
Beech River formation; Decatur County, Tennessee. 
