EXPLANATION OF PLATE 11. 



Page. 



Figs. 1, 2. Eretrnocrinus spinosus (Miller and Gurley), basal and side views of 



Troost's type of Actinocrinites marineri 67 



3. Eucalyptocrinus ovalis Hall, side view of the type-specimen 48 



4. Eupachycrinus maniformis (Yandell and Shumard), side view of Troost's 



type of Cyathocrinites gracilis, showing left posterior lateral ray and 



the anal area. Xli 94 



5. Cyathocrinus? municipalis (Troost), side view of a specimen partially 



embedded in the matrix. The specimen was figured by Troost as 

 Poteriocrinites municipalis 82 



6. 7, 8. Hydreionocrinus depressus (Troost) (Hall), basal, interior, and pos- 



terior views of Troost's type of Cyathocrinites depressus. X1J 92 



9. Scytalocrinusf gracilis (Troost), side view of Troost's type of Agassizo- 



crinites gracilis. X2 88 



138 



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