The Conchologist's First Book / A System of Testaceous Malacology, Arranged Expressly for the Use of Schools, in Which the Animals, According to Cuvier, Are Given With the Shells, a Great Number of New Species Added, and the Whole Brought Up, as Accurately as Possible, to the Present Condition of the Science.

by Edgar Allan Poe; Thomas Brown

Spatulate, rounded and broad at the top.

Species, the division of a family or genus.

Spiny, thorny.

Spinous, like a hedgehog.

Spire, all the whorls in univalves except the one in which the aperture is situated, which is termed the body.

Spiral, twisted like a corkscrew.

Squamose, scaly.

Striated, covered with thread-like lines.

Sub, almost.

Subarcuated, somewhat arched.