EXPLANATION OF PLATE 7. 



Page. 

 1, 2. Eupachycrinus boydii Meek and Worthen, 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. X1.3. 



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



Troost's type of Cyaihocrinites crateriformis, XL3. 



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



small specimen 97 



8, 9, 10. Lampteroainus 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 



1L. 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 trautseholdi Wachsmuth and Springer, side, 

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

 Cyaihocrinites robustus 98 



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



Figure of Troost's type of Cyaihocrinites tiarseformis 99 



130 



