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.

Hyalimax pellucidus according to Tryon (1884)[1]
The internal shell of Hyalimax pellucidus according to Tryon (1884)[1]

Hyalimax
A live animal of Hyalimax maillardi
Scientific classification
Kingdom:
Animalia
Phylum:
Mollusca
Class:
Gastropoda
(unranked):
clade Heterobranchia

clade Euthyneura
clade Panpulmonata
clade Eupulmonata
clade Stylommatophora

clade Elasmognatha
Superfamily:
Succineoidea
Family:
Succineidae
Genus:
Hyalimax

Species

See text

Species

Species in the genus Hyalimax include[2] (old source from 1892 was used, some of these names may be synonyms):

  • 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[1] (Hyalimax pellucidus seems to be misspelled Hyalimax perlucidus.)
  • Hyalimax reinhardi Morch, 1872 - from Pulo Panjang and Sambelong, Nicobar Islands.
  • Hyalimax viridis Theobald, 1864 - from Arracan.

Description

Tryon (1884)[1] wrote about the genus Hyalimax (while mentioning Hyalimax pellucidus as an example) like this:

"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."

References

This article incorporates public domain text from the reference [2] (distribution localities were cited) and from.[1]

  1. Tryon G. W. 1884. Structural and systematic conchology: an introduction to the study of the Mollusca. Volume III. Philadelphia, published by the author. page 88.
  2. Hedley C. 1892. Art. XVIII.—An Enumeration of the Janellidae. Transactions and Proceedings of the Royal Society of New Zealand, Volume 25, pages 156-162. cited pages 161-162.

Further reading
  • Quick H. E. 1939. Hyalimax mauritianus Fischer, a succineid slug from Mauritius. Bull. Maurit. Inst. 1: 57–61.
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