Kerama Is, near Okinawa, Japan. 4m depth, on a rope covered with algae and sponge. Shell length 6mm. PHOTO: Atsushi Ono.
See message below.
• Habe, T. (1950) Hydatinidae, Bullidae and Akeridae in Japan. Illustrated Catalogue of Japanese Shells, 3: 17-24.
Rudman, W.B., 1999 (December 21) Hamineobulla kawamurai? Habe, 1950. [In] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/hamikawa
February 9, 2000
From: Bill Rudman
By chance, I have just noted a reference to the radula and gizzard plates of Hamineobulla kawamurai. The authors suggest that this relates H. kawamurai to the Atyidae (Haminoeidae) but both the teeth and the gizzard plates look much more like Scaphander than Haminoea or Atys.
This doesn't help in identifying Atsushi Ono's animal, which I tentatively identified as this species, because we don't know anything about the anatomy of Atsushi's animal or the living animal of Hamineobulla kawamurai.
•Kitao, K. & Habe, T. (1982) Systematic positions of Hamineobulla kawamurai Habe, 1950 and Pseudophiline hayashii Habe, 1976 (Opisthobranchia). Venus, The Japanese Journal of Malacology, 41(1): 61-63.Rudman, W.B., 2000 (Feb 9) Re: Hamineobulla kawamurai?. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/1874
December 24, 1999
From: Atsushi Ono
I found brown bubble shell in a bay near the channel, [Kerama Is. - near Okinawa] at 4m depth, on a rope covered with algae and sponge.
Shell length is 6mm long. This is very active animal. I think this is Haminoeidae species.
Could you help me to identify this?
email@example.comOno, A., 1999 (Dec 24) Hamineobulla? from Kerama Is. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/1694
It is possibly Hamineobulla kawamurai Habe, 1950 which was described from Amami-Oshima, Japan. The genus and species are based on a 7.8mm long shell so I have no idea whether it is related to Bulla or Haminoea, but your animal has an animal which looks quite similar to that of Bulla.
Perhaps Clay Carlson is familiar with this animal and can help us with an identity.