Hydatina

Hydatina
Live individual of Hydatina physis, head end towards the top of the image
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Family:	Aplustridae
Genus:	Hydatina Schumacher, 1817
Species
See text
Synonyms
Bulla (Hydatina) Schumacher, 1817 Hydatoria Iredale, 1936

Hydatina is a genus of sea snails, bubble snails, marine opisthobranch gastropod mollusks in the family Aplustridae.

Species

Species within this genus include:

• Hydatina albocincta Van der Hoeven, 1839
• Hydatina amplustre Linnaeus, 1758
• † Hydatina crebristriata (H. Woodward, 1879)
• Hydatina exquisita Voskuil, 1995
  • Distribution: Marquesas Islands
  • Length: 21 mm
  • Description: very globose, thin shell with black and purplish spiral bands on body whorl and a narrow white band below the suture and at anterior end: anterior end of the columella is directed slightly to the right.
• Hydatina fasciata (Bruguière, 1792)
• Hydatina montilai Delsaerdt, 1996
  • Distribution: Philippines.
• Hydatina physis (Linnaeus, 1758)
• Hydatina vesicaria (Lightfoot, 1786) brown-lined paper bubble
  • Distribution: Florida, Mexico, Caribbean.
  • Length: 17–45 mm
  • Description: lives on the bottom at the depth of 8 m to 64 m; very fragile and delicate shell with fine brown spiral lines
• Hydatina zonata Solander in Lightfoot, 1786 zoned paper bubble

Synonyms

• Hydatina aplustre [sic]: synonym of Aplustrum amplustre (Linnaeus, 1758) represented as Hydatina amplustre (Linnaeus, 1758) (misspelling)
• Hydatina cinctoria Perry, 1811 (color variant and synonym of Hydatina zonata).
  • Distribution: South Africa
• Hydatina circulata (Martyn, 1789) : synonym of Hydatina zonata ([Lightfoot], 1786) (non-binominal)
• Hydatina exigua Hedley, 1912: synonym of Noalda exigua (Hedley, 1912)
• Hydatina eximia (Deshayes, 1863): synonym of Micromelo scriptus (Garrett, 1857)
• Hydatina filosa Schumacher, 1817: synonym of Hydatina physis (Linnaeus, 1758) (junior subjective synonym)
• Hydatina inflata Dunker, 1877: synonym of Hydatina zonata ([Lightfoot], 1786) (junior synonym)
• Hydatina stroemfeldi [sic] synonym of Hydatina vesicaria ([Lightfoot], 1786) (misspelling - incorrect subsequent spelling)
• Hydatina stromfelti Odhner, 1932: synonym of Hydatina vesicaria ([Lightfoot], 1786) (junior subjective synonym)
• Hydatina velum Gmelin, 1791 (probably color variant and synonym of Hydatina zonata)
  • Distribution: Indian Ocean, East Africa
  • Length: 25–50 mm

Gallery

• 
  Hydatina albocincta
• 
  Hydatina physis
• 
  Hydatina zonata

References

• Voskuil, R. P. A. (1995). The living species of the genus Hydatina Schumacher, 1817, (Mollusca: Gastropoda: Opisthobranchia: Hydatinidae) with the description of a new species. Vita Marina. 43 (1-2): 29-38.

External links

• SEM images of the radula can be found at Thompson, T.E.; Bebbington, A. (1973). "Scanning electron microscope studies of gastropod radulae". Malacologia. 14: 147–165.
• Sea Slug Forum info
• Info on the genus
• Schumacher, C.F. (1817). Essai d'un nouveau système des habitations des vers testacés. Copenghagen: Schultz. pp. 1–288.
• Iredale, T. (1936). "Australian molluscan notes, no. 2". Records of the Australian Museum. 19 (5): 334.

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