P L ATE I. 



/. 1'oTKRIOCRIN US SIMPLEX. N. 8. 



g—*g 1. Platycrinus Lkai. N. 8. 



a. IIadrocrinuk discus. N. S. 



b. Hadrocrinus plenissimus. N. 8, 



h. 1, IIadrocrinus plenissimus. Base seen from tho insido of tho animal, twice the diameter of the base 



of a. 



b. 2. Hadrocrinus plenissimus. Arm bases. Fragment of an individual four and a half inches in 



diameter. 



b. 3. IIadrocrimus plknissimus. Fragment of a specimen three inches in diameter, showing seven (7) 



ranges of plates below the arms. 

 C. II A DROCR1NUS ANOULARIS. N. S. 



d. 1. Actinocrinus PENTA8PINA. N. 8. Profile. 



/I. Actinocrinus pentaspina. N. S. Basal view. 



e. Actinocrinus multacohnu. JST. 8. 

 h. Column of " Dolatocrinus. " 



I 



