A. cepa.
A. electrica.
A. pyriformis.
A. fornicata.
A. membranacea.
A. squamula.
A. lens.
A. ephippium. The Saddle Anomia. Pl. [16], fig. 1.
Shell sub-orbicular, irregularly wrinkled and waved; upper valve convex, under flat and perforated at the hinge, through which passes the ligament by which it is affixed to other bodies; inside pearly, and of various changing colours, such as green, purple, violet, and yellow.