Snake mimicing ceterpillar ID

[Mark Cassino]

A few weeks ago I ran into a caterpillar that seemed to mimic a snakes head
at its rear end.  Here's a couple of pics:

http://www.net-link.net/~cassino/caterpillar/cat01.jpg

http://www.net-link.net/~cassino/caterpillar/00103002caterpillar_p.jpg

(Sorry - can't the roll of film where I got the _front_ end clearly
depicted...)

I'm sure this is a common and well known creature - I'd just like to have
the right ID for the photos.  Can anyone tell me what it is?  It was
photographed in SW Michigan in late September.

TIA -

MCC


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Mark Cassino
Kalamazoo, MI
cassino at markcassino.com
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Photos: http://www.markcassino.com
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