Daudebardia (6 sp.), Central and South Europe; and a species has since been discovered in New Zealand.
Macrocycles (4 sp.), Chili, California, Oregon and Central North America.
Columna (3 sp.), West Africa, Princes Islands and Madagascar.
Stenopus (2 sp.), Island of St. Vincent (West Indies.)
Pfeifferia (2 sp.), Philippines and Moluccas.
Testacella (2 sp.), West Europe and Teneriffe. About 8 species have been since described, including one from New Zealand.
Fossil species of Helix, Bulimus, Achatina, Balea, and Clausilia, are found in all the Tertiary formations; while a species of Pupa (as already stated) occurs in the carboniferous formation. For interesting details of the distribution of the sub-genera and species of Achatinella in the Sandwich Islands, see a paper by Rev. J. T. Gulick in the Journal of the Linnean Society. (Zoology, vol. xi. p. 496.)
Family 23.—LIMACIDÆ.—(12 Genera, 116 Species.)
| General Distribution. | |||||
 | |||||
| Neotropical Sub-regions. | Nearctic Sub-regions. | Palæarctic Sub-regions. | Ethiopian Sub-regions. | Oriental Sub-regions. | Australian Sub-regions. |
| — — — — | 1. 2. 3. 4 | 1. 2. 3. 4 | — — 3 — | 1. 2. 3. 4 | 1. 2. 3. 4 |
The Limacidæ, or Slugs, are widely distributed, but they are absent from South America, where they are represented by the next family. They also seem to be absent from the greater part of Africa. The genera are distributed as follows:—