PLATE XXI. 
PENTACRINUS WYVILLE-THOMSONI, Jeffreys. 
. A third or axillary radial, 
a. Distal face, 
b. Side view, 
c. Dorsal view, 
d. Proximal face, . 
e. Ventral surface, 
. A second or axillary distichal, 
ot 
t. Distal face, 
b. Side view, 
d. Proximal face, . 
c. Dorsal view, 
e. 
Ventral surface, 
. A first distichal, 
a. Ventral surface, 
b. Proximal face, . 
. A first brachial, : 
a. Ventral surface, 
b. Proximal face,.. ; : : 
c. The proximal face of another specimen, 
. A second radial, 
a. Distal face, 
b. Ventral surface, 
c. Proximal face, . 
. A first radial, . 
a. From beneath, . 
b. Side view, 
c. From above, 
d. Distal face, 
. An isolated basal, 
a. From beneath, . 
b, Side view, 
Diam. 
10 
10 
10 
10 
10 
10 
10 
313 
