Unknown Neritidae and Naticidae

[Emma]

Hello everybody,

Here are some pictures of Neritidae and Naticidae. I can only offer the size, so if anyone knows of an approximate locality, that would be of great help too.

First: 17'5 mm.







Second: 19.1 mm





Third: 25 mm





Fourth: 22 mm





Fifth: 30 mm





Best wishes,

Emma.

[wolfi]

Hi Emma!
Some suggestions:
First: should be Natica tigrina (Röding, 1798), Southeast-Asia
Second: might be Neritina coromandeliana Sowerby, 1836, Southeast-Asia
Third: should be Nerita albicilla Linnaeus, 1758, Southeast-Asia.
So far for today  ,
best wishes: wolf

[paul monfils]

I agree with the above, and #4 is Nerita signata.

[Emma]

Thanks Paul and Wolf!!

Best wishes,

Emma.

[helmetapointe]

        Second can bee : Neritina (Vittina) turrita

[dave r]

Not turrita, the spire is not high enough. This group of Neritidae is in a terrible mess with species being misnamed all over the place, personally I would say it was Neritina gagates but coromandeliana is as good as name as any.

[conchylinet]

My input:
#3 is albicilla (also very common in western indian ocean)
I have a few similar Neritina as #2 from Mauritius. I identified them as gagates aswell.
#5 is perhaps Nerita undata Linne 1758 (indopacific).
Pierre

[Emma]

Thanks Pierre!!

Best wishes,

Emma.