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Well, we don't get that here. We have a few landsnails, but they stay
buried (except the Helix aspersa) most of the time. I have found a few
interesting hitch hikers on plants at local nurseries. But nothing on the
roof.
-----Original Message-----
From: Conchologists List [mailto:[log in to unmask]]On Behalf Of
Kay & Andrew
Sent: Sunday, June 26, 2005 6:08 PM
To: [log in to unmask]
Subject: Re: Zachrysia on the roof
Dear Tom:
I have also found some live land snails on the roof which could have
hitch-hiked on birds as adults or as eggs: the European invader
Bradybaena similaris; the southern hemisphear invader Subulina octona; and
the native Polygyra cereolus. The arboreal Drymaeus multilineatus had
obviously dropped from overhanging trees onto the roof during one of my
visits to Dade County. I have also found many freshwater gastropods and
bivalves which were clearly dined upon by birds. Stranger still, I have
found Perna mussel and Quahog shells on the roof which were pilferred from
restaurant dumpsters by seagulls and crows. Perna is invading us by sea and
air!
Yours, Andrew
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