A Manual of Conchology / According to the System Laid Down by Lamarck, with the Late Improvements by De Blainville. Exemplified and Arranged for the Use of Students.

by Thomas Wyatt

A. macroptera. The rounded Avicula. Pl. [14], fig. 3.

Species oval, oblique, the earlike appendages very developed, especially the superior; one tooth at the hinge.

A. Atlantica. The Atlantic Avicula.

Obliquely curved, yellowish fawn colour, with dark reddish-brown stains; interior pearly.

5. Meleagrina. Two species.

The form of the shell is orbicular and equivalve, without the elongated transverse base on the cardinal tooth, and the sloping sides of the opening for the passage of the byssus are perceptible on both valves; these peculiarities distinguish it from the Avicula.

Shell sub-equivalve, rotundate, nearly square, externally squamose; the inferior cardinal margin straight, not caudate anteriorly; a sinus at the posterior base of the valves for the passage of the byssus; the left valve being at this place narrow and channelled; hinge linear, without teeth.

Meleagrina margaritifera.

Meleagrina albina.

M. margaritifera. The pearl-bearing Meleagrina, sometimes called the mother-of-pearl oyster.