PLATE 3. 



Page 



Fig. 1-4. Mariacrinus pacuydactylus. 107 



1. An individual preserving tlie body and greater portion of the arms, with several inches of tlie 



column. 



2. The body and lower part of the arms, showing the surface characters in a good degree of pre- 



servation. 



3. A specimen with arms, armlets, and tentacula nearly entire. 



4. Diagram illustrating the structure of the body and one arm to the second bifurcation of the 



brachial i)lates. 



4 a. Enlargement of a portion of an arm, showing the arrangement of plates and origin of armlets. 



Fig. 5. Mariacrinus paucidactylus. 109 



5. A specimen preserving the body above the basal plates, and a portion of several of the 



arms and armlets. 



Fig. 6-11. Mariacrinus PLUMosus. 110 



6. A small individual preserving the body and arms nearly entire, with a small ]>ortion of the column. 



7. A larger individual. 



8. Enlargement of the body of tig. 0. 



9. Enlargement of the arm-joints and tentacula. 



10. A similar enlargement from another specimen. 



11. Diagram showing the .structure of the body and arrangcnienl of the brachial plates. 



