ASTERIA. ECHINITES. 
119 
. The specimen figured represents the only one 
in wliich the reniform or pectoral ossicula, and 
those of the first joint of the arms, remain. I 
have restored the arms, to convey a more correct 
ide.'i of tlie nature of the original animal. To 
the liberality of the Rev. H. Ho})er I am indebted 
for the beautifid specimen from v^'hich the drawing 
was made. 
Specimens of the pelvis, consisting of the ab- 
dominal, costal, intercostal, and sca})ular plates, 
more or less distorted, are the only parts of the 
animal generally found ; the clavicles, humeral 
bones, &c. are among the rarest productions of the 
chalk formation. 
ASTERIA, OR STAR-FISH. 
• Rut few remains of these animals have been dis- 
covered in Sussex, although they are not uncom- 
mon in the Kentish chalk. 
The specimens in my possession consist of a few 
detached ossicula of pentagonaster semilunatiis^ 
( Org. Rem. vol. iii. tab. i. fig. 1.); and some 
fragments of a species that appears to be distinct 
from any figured or described. 
ECHINI. 
Of this order of mollusca, numerous species occur 
both in a recent and fossil state. They are marine 
animals, having a body more or less round, covered 
with a crustaceous shell, and furnished with move- 
I 4 
