PLATE XX. 
PENTACRINUS WYVILLE-THOMSONT, Jeffreys. 
Diam. Page 
Figs. 1-3. The ring of united basals, . 4 : : eg it) 282 
Fig. 1. From below. 
Fig. 2. From above. 
Fig. 3. From the side. 
Fig. 4. The central plug of limestone network within the calyx; from 
above, : : : 3 : ; aXe O 34 
Fig. 5. The same ; from below, : : : ; aay ee eO 34 
Fig. 6. Interior view of the calyx, after removal of two radials and 
one basal, . ‘ ; ; : . J ESz Al) 34 
Figs. 7-9. The ring of united radials, . : ; pe ee si K(0), 33 
ea 
. 7. From the side. 
a 
. 8. From above. 
a 
oO 
(=) 
oO 
to) 
g. 9. From below. 
