PLATE 48. 



Fig. 1. 599. 1. Stephasocrinus angulatus. ( Pag. 212.) 



1 a. A specimen of the ordinary form and proportions, having a p»rt of the cohimn attached. 



1 6. A specimen more elongated, and somewhat flattened. 



1 c. A spednien with very prominent carina;. 



1 d. A similar larger specimen, with the body somewhat rotund and the carinse very strong. 



1 e. Three of the costal plates arranged laterally, showing the single and two converging carina;, and the 

 succeeding coronal plates. 



1 /. The lefthand side of one of the heptagonal pelvic plates, above which the costal plates divide, showing 

 one of the carina; extending from the base obliquely to the summit. 



1 g. The base of a specimen, showing the three divisions, and the depression for the attachment of the column. 



1 A. Figure showing the form and arrangement of plates of the body. 



1 t. The crown, as it usually appears when destitute of the plates, diverging from and supporting the cen- 

 tral proboscis. 



1 k. The crown, preserving the plates as described above. 



1 /. An enlarged figure, showing the structure and arrangement of the plates forming the summit. 



1 m. A transverse section at the base of the costal plates, showing the subdivisions of the plates, and the 



projecting angles of the carinas. 



Fig. 2. 600. 2. Stephanocrinus gemmiformis. ( Pag. 215.) 



2 a. An individual somewhat larger than the ordinary size. 

 2 A. A specimen with a fevf joints of the column attached. 

 2 c. The crown of an individual, as it is usually seen. 



2 d, e. The base of one of these, and the same enlarged, showing the rapidly expanding form which becomes 



nearly round or very obtusely pentagonal at the centre. 

 2 /. The structure of this species as shown from fig. 2 a. 



