I have to go with H. amouretta for Rick's shells. I've documented this conversation on LTS (http://z14.invisionfree.com/Conchologist_Forum/index.php?showtopic=2894) with Rick's photos (and permission) and added photos of a H. amouretta from the Solomons in my collection. While there are are some overall shape differences, with my shell more closely resembling forma crassa, I cannot see how Rick's shells can be distinguished as other than a normal, local, regional variation for the species.
marlo
---- Tom Eichhorst <[log in to unmask]> wrote:
> I agree with Rick. While the shells he illustrated may not be H.
> gracilis, they are certainly unlike any of the H. amouretta I have
> (another 30 specimens to that 50).
>
> Tom E.
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