Thanks, Kurt. The small one has a thickened lip but lacks the teeth. Sculpture is pretty similar. Maybe I can keep it alive and see how it develops. Does it matter what kind of leaves and humus it's in? David On Wed, 31 Jul 2002 08:55:20 -0400 Kurt Auffenberg <[log in to unmask]> wrote: It could be ... as those babies don't develop those recognizable shell characters until adulthood. Polygyrids also develop thickened aperatural lips usually when adult, so if the little one has a thin, fragile lip, it's probably a juvenile........look at the shell sculpture and periostracum.....If they match....you have a match... Kurtles Mr. Kurt Auffenberg Senior Biological Scientist Exhibits & Public Programs University of Florida Hull Road & SW 34th Street Powell Hall, P.O. Box 112710 Gainesville, Florida 32611-2710 Telephone: 352-846-2000, ext. 253 Fax: 352-846-0253