PLATE I. 



Page. 



Agaricocrinus iowensis, n. sp 5 



Fig. 1. Basal view. 



Fig:. 2. Summit. 



Fig:. 3. Azygous view. 



Agaricocrinus keokukensis, n. sp 7 



Fig. 4. Basal view. 



Fig:. 5. Summit. 



Fig. 6. Azygous view. 



Batocrinus sharonensis, n. sp 18 



Fig. 7. Azygous view. 



Fig. 8. Opposite side of same. 



Fig. 9. Lateral view. 



Batocrinus scitulus, n. sp 19 



Fig. 10. Azygous view. 



Fig. 11. Opposite side of same. 



Batocrinus senex, n. sp 21 



Fig. 12. Azygous view. 

 , Fig. 13. Opposite side of same. 

 Fig. 14. Summit of another specimen. 



Batocrinus reliquus, n. sp 22 



Fig. 15. Basal view. 

 Fig. 16. Azygous view. • 

 Fig. 17. Summit. 



Batocrinus rusticellus, n. sp 23 



Fig. 18. Basal view. • - 



Fig. 19. Same, magnified two diameters. 



Fig. 20. Azygous view. 



Fig. 21. Summit. 



Batocrinus reservatus, n. sp 25 



Fig. 22. Basal view, magnified two diameters. 

 Fig. 23. Same, natural size. 

 Fig. 24. Azygous view. 

 Fig. 25. Summit. 



Batocrinus rotuliformis, n. sp 26 



Fig. 26. Basal veiw, magnified two diameters, 

 Fig. 27. Same, natural size. 



