PLATE 44. 
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 b. 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 cf. Section 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. 
2 . 591. 2. Lecanocrintjs ornates. (Pag. 201.) 
2 b. 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 k. A fragment of a column, composed of irregularly alternating thicker and thinnner plates, which are 
also interrupted, or not continuous laterally, each joint being often composed of several pieces over¬ 
lapping each other. 
2 l, m. The end view of this fragment^ and the same enlarged, showing form of canal and crenulations of the 
surface. 
3. 4, 5, 6, 7, 8, 9. Columns of undetermined Crinoidea. (Pag. 230.) 
3 a, b. A fragment of a column, of the natural size, with sect ion of the same. 
3 c, d. Enlargements of the same. 
4 a. A fragment coiled upon the surface of a peice of shale. 
4 b. A small portion of the same enlarged. 
5 a, b. A fragment of a column where the joints are thin, the edges of the wider ones being slightly crenu- 
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, showing the strong somewhat dichotomous striae. 
8. A fragment of a column with the radicles attached. 
9 a, b, c. The base of another species, with the radicles attached. 
