98 
TAB. XLIQ. 
AVICULA RADIATA. 
Br 
A, testa grisea, radiis saipingen anes “epidermide 
concentrice elevata, processilius i i lineis racliantibus 
digestis. - 
Habitat in Indie occidentalis magi? P 
RAYED BIRDSHELL. 
Shell griseous with purplish rays: epidermis concentri- 
cally elevated, with processes arranged into radiating lines, 
This shell is generally supposed to inhabit the West-In- 
dian Seas, but I have not been able to ascertain the truth 
of this conjecture. 
The elevated processes of the epidermis, on close exami- 
nation, seem to be membranaceous, with fine concentric 
rings of shelly matter deposited on them. 
