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- Title
The anatomy of the opisthobranch genus Hydatina and the functioning of the mantle cavity and alimentary canal.
- Authors
RUDMAN, W. B.
- Abstract
A study of specimens of Hydatina physis (Linne, 1758) from Australia, New Zealand and Hawaii shows that the radula is variable and that sometimes a central tooth is present. A comparison with a specimen from the Canary Islands suggests thatH. stromfelti Odhner, 1932 is a geographical form of H. physis. A similar explanation applies to the small shell variations found in West Indian forms, sometimes described as H. vesicaria Solander, 1786. The anatomy of specimens of Hydatina amplustre (Linne, 1758) confirms that this species is congeneric with H. physis. It is suggested that members of this genus feed specifically on cirratulid polychaetes. The nervous system, reproductive system and mantle cavity show that the Hydatinidae are primitive opisthobranchs, closely related to the Acteonidae and the Bullinidae.
- Publication
Zoological Journal of the Linnean Society, 1972, Vol 51, Issue 2, p121
- ISSN
0024-4082
- Publication type
Article
- DOI
10.1111/j.1096-3642.1972.tb00777.x