PLATE A 41. 



Fig. 1. 576. 1. Caryocrinus ORNAxns. (Pag- 182-) 



Fig. 2. 572. 1. Clostehocrinus ELo^GATUs. ( Pag. 179.) 



2 a. The specimen natural size. 

 2 b. Tlie structure of the caly.\ 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. Glyptocrinfs PLtiMostrs. (F^g- 180.) 



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



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



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



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



the plate. 

 3 c. Tlie end of the same column enlarged. 



8 /. 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. 



Fig. 4. 574. 3. Glyptocrinus . ( Pag. 181.) 



Fig. 5. 575. 1. ICHTHYOCKIKUS? CLINTOSENSIS. ( P^lg- ISl.) 



Fig. 6. Undettrmined species. { Pag. 181.) 



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



Fig. 7. Joiiits of undetermined Crinoidea. { Pag. 182.) 



7 o. 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 c. View of the edge of a very thin specimen. 



Fig. 8. 577. 2. Tentaculites mindtus. ( Pag. 183.) 



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

 8 6. 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 crennlation of the rings. 



Fig. 9. 578. 3. Testaculites distans. (Pag- 184. j 



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



