PLATE 49 a. 



Fig. 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 6. A portion of the column enlarged, showing the edges of the joints quite smooth and flat. 



1 c, c. Views of the ends of the column, showing the articulating strioB reaching to the canal. 



\ d. K specimen having a small univalve shell attached, with its aperture setting closely down upon the 



siimmit, 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 Cartocuinus when spread out, showing the bilateral arrangement of its parts as before 



described. 



Fig. 2. 602, 1. Melocrinites sculptus. ( Pag. 228.) 



2 a. View of the base of this species, showing the plates slightly separated. 

 2 6. A figure showing the structure and relative position of the plates. 



2 c. The interior of a cup which is much elevated in the centre. 



Fig. 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. 

 S h. Several plates enlarged, showing the granular surface, with the strong striaj 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. 



Fig. 4, 5, 6, 7, 8. Plates of undetermined Crinoidea. (P^g- 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 Deadrocrinus . 



