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۷. GENUS. PLATYCRINITES. 
BROAD-PLATED, LILY-SHAPED ANIMAL. 
Generic Character. 
A Crinoidal animal, with an elliptic or (in one species) pentagonal column, 
formed of numerous joints, having a few side arms at irregular distances. Pel- 
vis, saucer shaped, formed of three unequal pieces; from which five large plate- 
like scapulæ proceed. 
Base provided with numerous fibres for attachment. 
Observation. 
The generic name has been derived from nrarrz, broad or flat, with re- 
ference to the form of the scapule. 
The want of coste supplied by the large plate-like scapule gives the supe- 
' rior part of these animals a pentagonal appearance, and furnishes so conspi- 
cuous a character, that 0 are readily distinguished from all other genera. 
1. SPECIES. PLATYCRINITES LAVIS. 
SMOOTH, BROAD-PLATED, LILY-SHAPED ANIMAL. 
` Specific Character. 
A Crinoidal animal, with a column formed of very muscular elliptical joints 
adhering by a transverse ridge. Round side arms, occasionally proceeding 
‘from the column, whose joints adhere by radiated surfaces. Pelvis, saucer- 
shaped, with the five scapule adhering to it, from each of which an arm pro- 
ceeds supporting two hands, having each two fingers, 
Pelvis and scapule smooth. 
