Dear Art and others,
 
I notice you used "most" in your synopsis of shell growth in the Wentletrap
family.  Our local E. angulatum (Say, 1830) has a predictable change in
profile as it grows (allometry).  Juveniles are plump; the shells become
progressively more elongate with further growth.  This is not the pattern
seen in most Epitoniids and modern Hominids, which latter seem to have an
opposite tendency.
 
Harry
 
 
At 10:02 AM 3/16/99 -0800, you wrote:
>Dear Wes;-
>    A wonderful approach to juvenile shells, a topic most of us wouldn't
>approach with a ten foot microscope.
>    Among the Epitoniidae, of course, the difference between most Juvies
>and adults is---the adult is bigger. They just keep winding around
>repeating the same pattern. Among Juvies, it is often impossible to tell
>one species from another until they have completed a few whorls. In that
>case, the best one can do is specify the genera or sub-genera.
>     Art
>
Harry G. Lee
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