Valvata arenifera Lea 1834 is a Helicopsyche.  I haven't found
information on the European species, which would probably include more
taxa named as snails.

Nomenclator Zoologicus and most other sources disagree on the author
and date for Helicopsyche.  It's also younger than the Swainson name,
but Swainson's name might have been suppressed.


--
Dr. David Campbell
425 Scientific Collections
University of Alabama
"I think of my happy condition, surrounded by acres of clams"

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