PLATE 49 
1. 601. 1. Caryocrinus ornatus. (Pag. 216.) 
1 a. An individual of this species, preserving a portion of the column more than seven inches in length. 
1 b. A portion of the column enlarged, showing the edges of the joints quite smooth and flat. 
1 c, c. Yiews of the ends of the column, showing the articulating striae reaching to the canal. 
1 d. A specimen having a small univalve shell attached, with its aperture setting closely down upon the 
summit, and covering the mouth of the crinoid. 
1 e. The summit of a specimen of medium size, showing the triangular form, the arrangement of the arms, 
and position of the mouth. 
1 /. An individual of medium size, nearly globular in form, marked by strong ridges parallel to and between 
the rows of pores, with intermediate strong tubercles. 
1 g. The structure of Caryocrinus when spread out, showing the bilateral arrangement of its parts as before 
described. 
2. 602. 1. Melocrinites sculptus. ( Pag. 228.) 
2 a. View of the base of this species, showing the plates slightly separated. 
2 b. A figure showing the structure and relative position of the plates. 
2 e. The interior of a cup which is much elevated in the centre. 
3. 603. 1. Heterocystites armatus. (Pag. 229.) 
3 a. Profile view of the specimen, showing the form of plates, the angular nodes, and the projection on one 
side indicating an aperture, marked o. 
3 6. Several plates enlarged, showing the granular surface, with the strong striae at the junction of the plates. 
3 c. The structure as far as can be ascertained from the specimen, showing position of aperture at o. 
4, 5, 6, 7, 8. Plates of undetermined Crinoidea. (Pag. 230.) 
4. This specimen has much the form of a pelvic plate of the preceding species, but the base is very narrow. 
5 & 6. These plates are apparently of the Lecanocrinus macropetalus , or a closely allied species. 
7. A plate of an unknown crinoid, the exposed surface of which is finely granulated, and the margins appa¬ 
rently thickened. 
8. Plate of an unknown crinoid, but probably of Dendrocrinus. 
