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wei
Joined: 30 Jan 2009 Posts: 37
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Posted: 30.06.2009, 11:22 Post subject: Unidentified shells |
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Here are some shells I would very much appreciate help with:
'Ovulidae_a' resembles Cuspivolva formosa, but I am unsure. 11mm.
'Ovulidae_b' seems to be Crenavolva trailli. 11.5mm.
'Ovulidae_c' is a Crenavolva but I am unsure which one. 9mm.
'Ovulidae_d' is a Crenavolva, which I've previously identified as a large C. leopardus, as the latter is rather common in the vicinity. 10mm.
Thanks in advance! |
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wei
Joined: 30 Jan 2009 Posts: 37
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Posted: 30.06.2009, 11:38 Post subject: |
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Attached below is a photograph of the living animal of:
'Ovulidae_a'
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felix Administrator

Gender:  Joined: 25 Jan 2009 Posts: 53
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Posted: 04.07.2009, 08:37 Post subject: |
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Hello
No. 1 is a stunted form of Cuspivolva formosa. Occasionally these are found also in PI.
No. 2 is Crenavolva traillii
No. 3 is a small Crenavolva matsumijai
No. 4 yes, C. leopardus |
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wei
Joined: 30 Jan 2009 Posts: 37
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Posted: 05.07.2009, 08:32 Post subject: |
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Thanks!
No. 3 does resemble C. matsumiyai. It seems close to C. guidoi too. I presume the colour, striation, thinner outer lip and heavier dentition point to the former? The shell was picked up in Singapore, and if it does prove to be C. matsumiyai, wouldn't that be a significant range extension? Perhaps you can enlighten if this species has been discovered in the Philippines.
Attached is a photograph of the living animal, not showing much of the mantle unfortunately.
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felix Administrator

Gender:  Joined: 25 Jan 2009 Posts: 53
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Posted: 06.07.2009, 03:21 Post subject: |
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I do not know all that much about Singapore, but I found the matsumijai in the South China Sea (Damar Is., near Borneo) and the Java Sea (Kangean Is.), at Bunaken (N. Sulawesi) and Balicasag (Bohol, very large shells), and it was repeatedly found in Kavieng, New Ireland, Papua New Guinea, so the species seems to be pretty much all over the place. Problem is they are almost always deep (35-50 m). I have found guidoi only once, in some place in Malaysia, not far south of Singapore (travelling on board the MV Empress). Those had a pitch-black animal. |
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wei
Joined: 30 Jan 2009 Posts: 37
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Posted: 06.07.2009, 06:15 Post subject: |
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Thanks for the discussion. |
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