s 
145 
in all the plates the analogous parts in each species of Crinoidea, the 
Marsupites, and Comatule. Their application is as follows :— 
A Superior portion of the animal. 
ZE Column. 
Base of attachment. : ye 
Fibres of attachment. 
Auxiliary side arms. 
Pelvis. 
Costal plate or joint. 
Intercostal plate or joint. 
Scapula. 
Interscapulary plate or joint. 
Irregular interscapulary plate. 
K Arms. 
L Cuneiform joint. 
M The hand. 
N The Finger. 
Tentacula. — * 
xcavation in the arm joints, fingers, and tentacula, for the passage of 
viscera, covered by the plated integument. : 
P Clavicle. 
Q Pectoral plates. 
R Capital plates. > 
S Mouth capable of being protruded into an elongated proboscis, by the 
sphincter contraction of the plated integument. 
T Plated integument covering the abdominal cavity, and the excavation in 
the arms, fingers, and tentacula. ‘ 
V_ Alimentary canal. 
U Exuded indurated calcareous matter. 
UE Entrance to the alimentary canal. 
WwW Impression of the auxiliary arm joints on the column. 
X Orifice of the mouth. 
Y Supposed aperture of the ovary. 
Z Undeveloped muscular cartilaginous parts. 
U 
“HsroOndnmoaw 
