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

H. Neritella. The Nerite-shaped Helicina. Pl. [19], fig. 4.

Species yellowish white, finely striated, the edge reflected in a roll.

H. striata. The striated Helicina.

Globular, striated, the right edge sharp, but reflected; the umbilical callosity rather thick, the operculum calcareous and solidified by a marginal roll and a vertical crosspiece.

5. Pupa. Twenty-seven species.

These shells are generally very small, some not more than an eighth of an inch in length; chiefly terrestrial.

Shell cylindrical, elongated, or sub-globular, ordinarily ventricose: summit obtuse; the turns of the spire numerous, almost equal; aperture round or oval, with margins almost equal, expanded, reflected; one or two plaits on the columellar edge, and several teeth, varying in number on the right margin.

Pupa mumia.

P. uva.

P. sulcata.