Fig. 2. Pentacrinus subbasaltiformis. (MiRer.) 

 2 — 'part of a column. 



Fig. 3. Pentacrinus Sowerbii. (^W^etherell.) a, and b. 



3 a — portion of a column. 



3 h — is also the frasrment of a column. 



Fig. 4. Pentacrinus Prattii. (Austin.) a, to c. 



4 ffl — part of a column. 



4 }) — portion of a column, shewing the articulating facets of the joints. 



4 c — is also part of a column. 



Fig. 5. Pentacrinus Fittonii. (Austin.) a, and b. 



5 a — part of a small column. 



5 b — portion of a larger specimen. 



Fig, 6. Pentacrinus basaltiformis. (Miller.) a, to e. 



a a — part of a column shewing the articulating point of attachment of a dasper. 



6 b — portion of a larger column exhibiting the articulating facet of a columnar joint. 



G c — part of anotlier column. 



6 d — part of a column shewing the articulating surface of a joint. 



6 e — portions of claspers. 



