PTEROCERA. STROMBUS. 95 
sub-foliaceous, with the sinus adjoining it. 14. 
B. W. 24. 4. 
PTEROCERA. 
Shell ovate-oblong, ventricose, terminated inferiorly 
by an elongated canal ; lip dilating by age into 
a digitate wing, and having a sinus towards 
the base ; spire short. 
P. LamsBis. Oblong-oval, tubercular, gibbous, 
with seven claws, variegated with rufous and 
brown; terminal digitations straight; aperture 
very smooth, rosy. 6. W. 24. 7. 
P. AURANTIA. Ovate, tubercular, gibbous, 
transversely wrinkled, with seven claws, clouded 
with white and yellow; the claws slender, very 
acute, and obsoletely nodulous; tail very long 
and slender, smooth, and curved; throat orange, 
and quite smooth. 41. S. 405. 
P. cHIRAGRA. Ovate-oblong, with the back 
tubercular and sub-gibbous, armed with six longish 
claws, which project’ on either side, and curve 
upwards; colour white, variegated with brown ; 
throat rosy, striated with white. 6. W. 24. 5. 
STROMBUS. 
Shell ventricose, terminating in a short emarginate 
or truncate canal; lip dilating by age into a 
simple wing, lobed or crenate superiorly, and 
