9 8 



THE CRINOIDEA 



cup-like body containing the viscera, from whose upper rim 

 proceed five articulated arms, dividing into tentaculated fingers, 



Anal lube 



^pinnules 



FIG. III. 



A simple form of Crinoid : Botryo- 

 crinus decadactylus of the Wenlock 

 Limestone, seen from posterior inter- 

 radius. 



more or less numerous, surrounding the aperture of the mouth, 

 situated in the centre of a plated integument^ which extends over 

 the abdominal cavity, and is capable of being contracted into a 

 conic or proboscal shape. Some species of these animals ascer- 



