PLATE LXIV. 



Pace 

 Phtsetoceixus vENTKicosrs (Hall) 593 



Fig. 1. Specimen with arms, stem, and root. 



2. Lateral view of the calj'x. 



3. Anterior view of the calyx. 



4. Posterior view of a small elongate specimen. 



5. Dorsal aspect of a depressed specimen of Hall's variety " Acti7iocnnus" reti- 



citlatus. 



6. Anterior view of the calyx. 



7. Anterior view of a specimen of the type of McChesney's " Actinocrinus" 



suboentricosus. 

 8a. Specimen from the Lower Burlington limestone. 

 8b. Ventral aspect of the same specimen. 



Physetockinus dilatatus M. and W 595 



9. The type specimen. (After Meek and Worthen.) 



10. Dorsal aspect of another specimen. 



(All specimens, except Pig. 9, in the collection of Wachsmuth and Springer.) 



