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

V. vermiculosa.

V. subrostrata.

V. undulosa.

V. pumila.

V. ovata.

V. inquinata.

V. Casina. The Casina, or broad-ribbed Venus. Pl. [8], fig. 2.

Sub-orbicular, with transversely acute recurved ridges; lamellar striæ; crenulated on the hind margin; slightly channelled behind the depression.

V. decussata. The intersected Venus. Pl. [9], fig. 3.

Species sub-rhomboidal, with decussated striæ; margin not denticulated; umbo placed near one end; the three teeth of the hinge very contiguous and very weak; exterior brownish and marked with purple lines.