PLATE A 41. 



Fig. 1. 576. 1. Caryockinus oenatus. (Pag- 182,) 



Fig. 2. 572. 1. Closterocrinus elokgatus. ( Pag. 179.) 



2 a. The specimen natural size. 

 2 6. The structure of the calyx enlarged, showing one side with column helow. 



2 c, d, e, f. Portions of the columns and sections, natural size and magnified. 



Fig. 3. 573. 2. Glyptocrinus plumosus. (Pag- 180.) 



3 re. A portion of a single finger, with the tentacula attached. 



3 h. Two joints of the finger enlarged, with several of the tentacular joints attached. 



3 c. A fragment of the column, probably of the same species. 



3 d. A few joints of the same enlarged, showing the longitudinal line of separation between the five parts of 



the plate. 

 3 e. The end of the same column enlarged. 



3 /. A small fragment of the rock, with the surface nearly covered with the joints of this crinoid. 

 3 g-. Several of these joints enlarged, showing their variable character. 



574. 3. Glyptocrinus . {^^Z- 181.) 



575. 1. IcHTHYOCRINUSi CLINTONEKSIS. ( P^g- 181.) 



Undetermined species. (Pag. 181.) 



6 a. The specimen of the natural size. 6 b. The tentacula enlarged. 6 e. Section of the same. 



Fig. 7. Joints of imdetermined Crinoidea. ( Pag. 182.) 



7 a. One of these rings, presenting a smooth globular surface, with a smooth opening in the centre. The 



thickness of this one is nearly a quarter of an inch. - 



7 b. The impression left in the iron ore by a larger individual, the thickness of which was more than a quar- 

 ter of an inch. 



7 c. A very thick one, with a small opening in the centre. 



7 d. A small specimen of the same character. 7 e. View of the edge of a verj' thin specimen. 



Fig. 8. 577. 2. Tentaculites minutus. ( Pag. 1S3.) 



8 a. A small fragment of the green shale, preserving several .specimens of this fossil. 

 8 b. Two specimens drawn separate from the shale, of the natural size. 



8 c. An individual enlarged. 



8 d, e. Portions of two individuals still farther magnified, showing in one an apparent crenulation of the rings. 



Fig. 9. 578. 3. Tentaculites distans. (Pag- 184.) 



9 o. An individual of the natural size. 9 6. A portion of the same enlarged. 



Fig. 



4. 



Fig. 



5. 



Fig. 



6. 



