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

Scorbiculous, a depression or cavity.

Scutellated,  } shield-shaped.
Scutelliform, }

Seam, the line formed by the union of the valves.

Semi, is used in composition in the sense of half.

Semi-cordate, half heart-shaped.

Semi-cylindrical, half cylindrical, cut through lengthways.

Semi-orbicular, the shape of a half globe.

Semi-lunar, the shape of a half moon.

Semi-pellucid, somewhat pellucid or shining.

Septiform, in the shape of a partition.