4. Cancellaria. Twelve species.

This genus is not given by De Blainville precisely like Lamarck, as he

has removed those that are greatly canaliculated either to the Murex or

Turbinella. They are all marine shells, and greatly approximate the

last-mentioned genus.

Shell oval, globular, ventricose, rugged; the spire middling, pointed;

aperture ovate, enlarged, grooved, and sometimes sub-canaliculated

anteriorly; the right edge effuse, concave, sharp; the left or

columellar edge almost straight, and marked in the middle by two or

three plaits; operculum horny.

Cancellaria reticulata.

C. asperella.

C. scalaria.

C. scalariformis.

C. nodulosa.

C. cancellata.

C. senticosa.

C. citharella.

C. spirata.

C. obliquata.

C. rugosa.

C. Ziervogeliana.

_C. reticulata._ The reticulated Cancellaria. Pl. 25, fig. 5.

Oval, strong, ventricose; columella with three plaits; distant, coarse,

reticulated striæ; sometimes with yellow or orange bands; aperture

white.

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. · 第 198 / 258 题