PLATE LV. 



Page 

 Actinocrinus lobatus Hall 557 



Fig. la. Posterior view of a fine specimen ; showing portions of anal tube and arms. 

 (Coll. W. and Sp.) 

 lb. Stem near the calyx. 



Actinocrinus pernodosus Hall 561 



2a. Anterior view of the calyx. (Same collection.) 



2b. Posterior view of another specimen. (Same collection.) 



Actinocrinus multiramosus W. and Sp 564 



3. The calyx with an Onyehaster fastened to the anal tube. (Same collection.) 



Actinocrinus tenuisculptus McChesney 571 



4a. Anterior side of a specimen with arms. (Same collection.) 

 ib. Posterior side of the calyx. (Same collection.) 



Actixocrixus scitulus M. and W. .' .■"... 559 



5. Anterior side of a specimen with arms. (Same collection.) 

 6a. Side view of the calyx. (Same collection.) 

 6b. Posterior view of the same specimen. 



Actinoceinus arrosus (S. A. Miller) 577 



7. One of the type specimens. (Coll. F. A. Sampson.) 

 8a. Dorsal aspect of the calyx. (Same collection.) 

 8b. Side view of the same specimen. 

 8c. Ventral aspect of same. 



Cactocrinus obesus (Keyes) ' 613 



9a. Side view of the type specimen. (Coll. Missouri Surv.) 

 9b. Ventral aspect of the same. (Coll. W. and Sp.) 



Cactocrintts sexarmatus (Hall) 615 



10. Left postero-lateral side of the dorsal cup. (Coll. W. and Sp ) 



11. Posterior view of the calyx. (Same collection.) 



Cactocrinus eossatus (S. A. Miller) 620 



12. The type specimen, showing the posterior side of the calyx. (After Miller.) 



