U. S. NATIONAL MUSEUM 



* X. 



BULLETIN 115 PL. 2 



■^PWi^, 



^ A 



t: 



f, i 



M 



f 



t-, r 



-T-^ 



^.■■,T>-^ 



f 



X 



''n>^ 



Hadrocrinus discus, Himerocrinus plenissimus, Marsipocrinus striatus, and 



M. tennesseensis. 



For explanation of plate see page ei. 



