Hyalimax
Hyalimax is a genus of small, air-breathing, land slugs, terrestrial pulmonate gastropod molluscs in the family Succineidae, the amber snails. This genus has no external shell, but it has an almost flat internal shell plate.
File:Hyalimax pellucidus shell.jpg|thumb|The internal shell of Hyalimax pellucidus according to Tryon
Species
Species in the genus Hyalimax include :- Hyalimax andamanicus Godwin-Austen, 1882 - from Port Blair, Andaman Islands.
- Hyalimax maillardi Fischer, 1867
- Hyalimax mauritianus Rang, 1827 - from Mauritius.
- Hyalimax perlucidus Quoy & Gaimard, 1832 - from Pouce Mountain, Mauritius.
- Hyalimax pellucidus Quoy & Gaimard
- Hyalimax reinhardi Morch, 1872 - from Pulo Panjang and Sambelong, Nicobar Islands.
- Hyalimax viridis Theobald, 1864 - from Arracan.
Description
"Animal limaciform, swollen at centre, blunt before, and tapering behind; tentacles simple; mantle large, central, concealing all but a small opening; an internal shell-plate; no longitudinal furrows above the margin of the foot, and no caudal mucous pit; no distinct locomotive disk; external respiratory and anal orifices on the central right margin of the mantle; orifice of combined genital system on right side of head, halfway between eye-peduncle and mantle."
"Shell large, rudimentary, thin, oval, unguiform, non-spiral. Jaw smooth with blunt median projection and accessory quadrate plate. Lingual membrane with tricuspid central teeth, multifid laterals, and quadrate marginals."