At 12:54 PM 5/6/99 -0700, you wrote:
>I found this snail shell in the flood bank of a pond near the DesPlaines
>River in River Forest, IL near Thatcher and Washington.
>
>Can you suggest what species it might be? Or point me to a web site where I
>might be able to find it's classification?
>
Looks like Cinpangopaludina malleatus (Reeve, 1863), an exotic viviparid
that is widespread in the US. Could be a little greener, but it seems too
big and lacks the bands of our native viviparids. It certainly occurs in
Illinois.
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G Thomas Watters
Ohio Biological Survey &
Aquatic Ecology Laboratory
Ohio State University
1315 Kinnear Road
Columbus, OH 43212 USA
v: 614-292-6170 f: 614-292-0181
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"The world is my oyster except for months with an 'R' in them" - Firesign
Theater
"If I only had a brain" - The Scarecrow