PLATE LXXI. 



Page 



Platycrinus incomptus White 664 



Fig. 1. A very large specimen, showing the numerous ramifications of the arms. 

 (Coll. W. and Sp.) 



2. A small specimen, showing the same. (Same collection.) 



3. The type specimen. (Mus. Comp. Zool.) 



Platycrinus ^qualis Hall 671 



4a. A very large specimen with arms. (Same collection.) 

 4b. Portion of an arm (enlarged). 



5. The calyx, showing the radial facets and the small first costal. (Coll. W. 



and Sp.) 



Platycrinus lodensis Hall and Whitf 6C6 



6. The type specimen. (After Hall and Whitfield.) 



Platyckinus graphicus Hall and Whitf 672 



7. The type specimen. (After Hall and Whitfield.) 



Platycrinus contritus Hall and Whitf 667 



8. The type specimen. (After Hall and Whitfield.) 



Platycrinus niotensis Meek and Worthen 682 



9. Specimen with arms (from Indiana). 



Platycrinus Brittsi S. A. Miller 659 



10. The type specimen. (Coll. F. A. Sampson, Sedalia). 



Platycrinus corbuliformis Eowley and Hare ....... 657 



11a. Dorsal cup in a side view. 



lib. Dorsal aspect of the same specimen. (Coll. E. E. Eowley.) 



Platycrinus .equiternus S. A. Miller 658 



12. The type specimen. (Coll. F. A. Sampson.) 



. Platycrinus pisum Kowley and Hare 6G0 



13a. The type specimen ; posterior view. (Coll. E. E. Eowley.) 

 13b. Dorsal aspect of same. 



