Explanation of Plate LXXXIV. 



Pisocrinus gemmiformis S. A. Miller, page 278. 

 Figs. 1, 2. Posterior and basal views of the type specimen, (after Miller). 

 X2. 



Figs. 3, 4. Lateral and basal views of a natural mold with natural cast in 

 position. X2. 



Pisocrinus quinquelobus Bather, page 280. 



Fig. 5. Basal view of a specimen from Tennessee (after S. A. Miller). X 2. 

 Figs. 6, 7. Posterior and ventral views of a specimen from Romeo, Illinois. 

 X2. 



Pisocrinus benedicti, S. A. Miller, page 279. 



Fig. 8. Lateral view of a rubber impression of a natural mold. X2. 



Fig. 9. Basal view of a rubber impression of another natural mold. X2. 

 Figs. 10, 11. Basal and lateral views of a natural mold with the natural 

 cast in position. X2. 



Stephanocrinus obconicus sp. nov., page 281. 

 Figs. 12, 13. Posterior and basal views of the type specimen. X2. 



Homocrinus cylindricus Hall, page 291. 

 Fig. 14. Lateral view of a rubber impression of the natural mold. X2. 

 Fig. 15. Posterior view of the natural cast of the same individual. X2. 



Stephanocrinus skiffi sp. nov. page 282. 



Figs. 16, 17. Lateral and ventral views of a rubber impression of the 

 natural mold of the type specimen. X2. 



Figs. 18-20. Lateral, anterior and ventral views of the natural cast of 

 the same individual. X2. 



