

42 
IV. SPECIES. CYATHOCRINITES QUINQUANGULARIS. 
1 
FIVE-CORNERED, CUP-LIKE, LILY-SHAPED ANIMAL. 
Specific Character. 
A Crinoidal animal, with a pentagonal column, whose joints adhere by an 
elevated striated rim, enclosing a pentagonal depression with a similar-shaped 
central column. The cup-like portion, formed by plates surmounting the column, 
sending off five arms. 
Locality. 
Clevedon, in the Magnesian variety of the Mountain Limestone; in Moun- 
tain Limestone, at the Black Rock, near the River Avon. 
Description. 
A comparatively small species. 
The CoLumn (fig. 2. to 8.) is formed of alternating large and small penta- 
gonal joints, the former being also thicker than the latter, and drawn in near 
the line of their adhesion to each other. Their centre is perforated by a subpen- 
tagonal alimentary canal, surrounded by a similar depression, enclosed by a 
striated rim, which articulates with a similar one on the joint above it. The 
angles of the alimentary canal do not coincide with those of the column, but 
