EXPLANATION OF PLATE 7. 



Page. 



Figs. 1, 2. Eupachycrinus boydii Meek and Worthe.n, basal and interior views of 



the dorsal cup 95 



3, 4. Anterior and posterior views of the same specimen. In these fig- 

 ures the sides of the dorsal cup are represented as much too flaring. 

 They are nearly vertical, as shown in fig. 5. XI. 3. 



5. Longitudinal section of the same specimen. These figures are of 



Troost's type of Cyathocrinites crateriformis , X1.3. 



6, 7. Agassizocrinus , species undetermined, side and top views of a 



small specimen 97 



8, 9, 10. Lampterocrinus tennesseensis Roemer, side, top, and basal views 

 of a well-preserved specimen. The higher plates of the calyx are 

 not represented in the figure. The figures are of Troost's type of 

 Balanocrinites sculptus 103 



11. Cleiocrinus tessellatus (Troost), side view of a specimen partially em- 



bedded in the matrix. The arrangement of plates is not accurately- 

 represented. Figure of Troost's type of Campanulites tessellatus 100 



12, 13, 14. Stemmatocrinus trautscholdi Wachsmuth and Springer, side, 



basal, and top views of the dorsal cup. Figure of Troost's type of 



Cyathocrinites robustus 98 



15, 16, 17. Ichthyocrinus tiarxformis (Troost), side, basal, and top views. 



Figure of Troost's type of Cyathocrinites tiarseformis 99 



130 



