THE 
MANTLE SCALLOP. 
Generic Character. 
Animal resembling a Tethys. 
Shell bivalve, (in most species unequally,) sub- 
auriculated. 
Hinge toothless, with an ovate or subtrigonal 
fossule and lateral transverse streaks. 
Specific Character, &c. 
Variegated SCALLOP with equal valves, striped 
by twelve rough, imbricated, scaly rays. 
The Ducal MANTLE SCALLOP. 
Le Manteau Ducal. 
Argenv. Knorr. &c. &c. 
This shell is very justly considered as one of the 
most beautiful of its tribe : it varies much in colour, 
and is principally found about the coasts of the In¬ 
dian seas: it is represented on the plate in its na¬ 
tural size. 
