THE 
AVICULAR CRENATULA. 
/ 
GENERIC CHARACTER. 
Animal allied to a Tethys? 
»S'//i’//bivalve, irregular, flattened, shut. 
Hinge linear, excavated and crenated by a series 
of fossules. 
SPECIFIC CHARACTER, 
Subrhomboid, flattened, membranaceous, yel¬ 
lowish CRENATULA, with unequal 
valves marked by obscure scales, and radi¬ 
ated with undulating dusky lines. 
La CRENATULE AVICULAIRE. 
Lamarck, Ann. Mus. Hist. Nat, No. 13. 
The shell here figured is represented in its natural 
size, and is chiefly found about the coasts of the Ame¬ 
rican islands, 
