PLATE LXIV. 



Pace 

 Phtsetoceinus vENTKicosus (Hall) 593 



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



2. Lateral view of the calyx. 



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 " Actinocrinus " reti- 



culatus. 



6. Anterior view of the calyx. 



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



siihventricosus. 

 8rt. Specimen from the Lower Burlington limestone. 

 86. Ventral aspect of the same specimen. 



Physetocrinus dilatatus M. and W 595 



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



10. Dorsal aspect of another specimen. 



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



