EXPLANATION OF PLATE 9. 



Page. 

 Fig. 1. Catillocrinus tennesseese (Troost) Shumard, top view of the dorsal cup, 

 of the type-specimen, showing the thick wall and the arm bases. 



Xli 24 



2,3. Side and basal views of another specimen. XI?. 



4. Symbathocrinus granulatus Troost, side view of a small specimen. X 



2. See figs. 7, 8 27 



5, 6. Marsipocrinus tennesseensis (Roemer), basal and side views of Troost's 



type of ( 'upellsecrin ites buchii 30 



7, 8. Symbathocrinus granulatus Troost, side and basal views of Troost's 



type of this species. See fig. 4. Xli 27 



9. Symbathocrinus troosti, new species, basal view of the type-specimen. 27 



10. Marsipocrinus verneuili (Troost), basal view of a specimen showing 



the characteristic surface ornament. X2 32 



11. 12. Side and top views of Troost's type of Cupellsecrinites verneuili. 



X2. 

 13, 14. Marsipocrinus striatus (Wachsmuth and Springer), basal and side 



views of Troost's type of Cupellxcrinites striatus 33 



134 



