PLATE XXXIV. 



Page 

 Eretmocrinus caltculoides (Hall) 395 



Fig. la. Lateral view of a specimen having the lower part of the arms preserved. 

 U. Opposite view of the specimen, showing anal tube. 



2. A specimen showing the paddle-shaped tips of the arms. 



3. Lateral view of the calj-x, showing the exceutric position of the anal tube. 



4. Showing the curvature of the anal tube. 



Eretmocrinus granuliferus W. and Sp 390 



5a. Lateral view of the type specimen. 



5b. Opposite side of the specimen, showing the paddle-shaped arms and anal 



tube. 

 5c. A detached plate showing surface ornamentation. 



Eretmocrinus caltculoides var. nodosus W. and Sp 396 



6. Posterior side of the type specimen. 



7. A specimen showing the anal side. 



8- Lateral view of a very elongate specimen. 



Eretmocrinus pr^gravis S. A. Miller 405 



9. Lateral view of the calyx. 



10. Posterior view of another specimen. 



Gennjeocrinus kentuckiensis (Shum.) 548 



11. Dorsal aspect of the calyx. 



12. Right posterolateral side of another specimen. 



13. Aspect of the ventral disk. 



Gexn^eocrinus eucharis (Hall) . . . • 549 



14. Portion of the dorsal cup 



Acacocrinus americanus W. and Sp 515 



15a. Anterior side of the type specimen. 

 15b. Posterior side of the same specimen. 



AcAcocRiNus Elrodi W. and Sp 515 



16. The type specimen. 



