Dear Avril (and all),

Having just spoken to Dan Geiger today (he gave a talk at our local shell
club meeting), I think it could be possible to tell the difference between
species based on external morphology of the animal. Dan is in Australia
(guest worker at the Australian Museum) at the moment and can be reached at
[log in to unmask] If he can't help, I am sure he'll be able to point
you in the right direction

regards

Patty


Dr. Patty Jansen

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