EXPLANATION OF PLATE 6. 



Page. 



Figs. 1, 2, 3. Lobocrinus hashvillse (Troost) (Hall), side, basal, and top views of 



the type-specimen 75 



4. Fragment of the anal tube. 



5. Scaphiocrinus, species undetermined, side view of the specimen de- 



scribed by Troost as Cyathocrinites planus f Miller. The arms are 

 represented as simple, but the specimen shows that they branch 

 two or more times 87 



6. Pericchocrinus? species undetermined, side view of the arms. This 



specimen was referred by Troost to Actinocrinites moniliformis ? 

 Miller 79 



7. View of the lower surface of the specimen represented by fig. 6. 



8,9. Erisocrinus f bipartitus (Troost), side and basal views 98 



10. Periechocrinus tennesseensis (Hall), side view of a well preserved 



specimen. This is from Troost's type of Actinocrinites tennesseese 76 



11. Scaphiocrinus huntsvillse Worthen, side view of a specimen partially 



embedded in the matrix. Figure of Troost's type of Cyathocrinites 



roemeri 8G 



128 



