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. nitida. The pellucid Snail.

Species depressed, more or less largely umbilicated; the edges sharp, but always thin and shining.

H. nemoralis. The grove Snail.

Species imperforated, semi-globular, thin, and sub-pellucid; not umbilicated, with a light inflexion at the place of the junction of the columella with the margin of the aperture; colour various, inner margin white or reddish brown; volutions five, with several dark brown bands.

H. Carthusiana. The Carthusian Snail.

Species sub-depressed, sub-umbilicated, with a sharp edge, thickened within by a roll.

H. arbustorum. The orchard Snail.

Sub-globular, sub-pellucid, sub-umbilicated, five volutions, finely striated longitudinally; mottled with greenish yellow, streaked with deep chestnut, a broad brown band commonly at the edge of the outer lip, and running round through the volutions to the apex.

2. Carocolla. Eighteen species.

All terrestrial shells in this genus, taken from the Linnæan Helix on account of the peculiarity of the shell, which is orbicular, more or less flat on the upper part; the circumference of the shells constantly carinated or sub-carinated; aperture ovate, transverse, contiguous to the axis of the shells; outer lip sub-angular, sometimes toothed within.