PLATE 44. 



Fig. 1. 589. 1. Lyriocrinus dactylus. (Pag. 197.) 



1 a. An individual of medium size, preserving the cup and the arms nearly to the extremities. 



1 i. A smaller specimen, preserving a portion of the column, and leaving four of the arms only visible. 



1 c. A larger specimen, showing the arms and column well preserved. 



1 c f. Sectiou of the column. 



1 d. The structure as made out from the specimen fig. 1 a. The commencement of three pairs of fingers is 

 shown, and the simple joints at the base of the other pairs in the same relative position. 



1 e. A single plate enlarged, showing the character of the surface, and the increased ornament at the mar- 

 gins or junction with adjoining plates. 



1 /. A fragment of a column enlarged, showing more distinctly the alternating larger and smaller joints. 



1 g. The end of the column enlarged. 



Fig. 2. 591. 2. Lecanocrinus ornatus. (Pag. 201.) 



2 6. A small specimen of this species. 



2 a. A larger individual, showing the same form as the preceding 



2 e. Base of the anchylosed pelvic plates, with a single joint attached. 



2 d. The interior of the same. 



2 e. The same enlarged, showing more distinctly the triangular cup and sutures of the plate. 



2 /. Lateral view of the same specimen. 



2 g. The plates separated, showing the structure of the crinoid as far as the first divisions of the arms. 



2 h, i. A costal and arm-joint enlarged, showing the character of the surface markings. 



2 fc. A fragment of a column, composed of irregularly alternating thicker and tliinnner plates, which are 

 also interrupted, or not continuous laterally, each joint being often composed of several pieces over- 

 lapping each other. 



2 /, «i. The end view of this fragment, and the same enlarged, showing form of canal and crenulations of the 



surface . 



Fig. 3, 4, 5, 6, 7, 8, 9. Colmmis of undetermined Crinoidea. ( Pag. 230.) 



3 a, 6. A fragment of a column, of the natural size, with section of the same. 



3 c, d. Enlargements of the same. 



4 a. A fragment coiled upon the surface of a peice of shale. 

 4 6. A small portion of the same enlarged. 



b a,b. A fragment of a column where the joints are thin, the edges of the wider ones being slightly crenn- 

 lated, having two or more thin joints between. 



6 a, b, c. Columns composed of smooth equal joints, having lateral branches or side arms. 



7 a. A fragment of the base of a column where it diverges into the radicles. 



7 b, c. The articulating surface, natural size and enlarged, shoying the strong somewhat dichotomous stria. 



8. A fragment of a column with the radicles attached. 



9 a, b, c. The base of another species, with the radicles attached. 



