The rosamiae I have seen are lower spired than munda and bi-colored or with
wide bands, unlike munda. Some rosamiae are brown adapically and white
abapically, while others are just the reverse. Some have pinkish tints as well.



G. Thomas Watters, PhD
Curator of Molluscs
Museum of Biological Diversity
Department of Evolution, Ecology & Organismal Biology
The Ohio State University
1315 Kinnear Road
Columbus, OH 43212 USA
v: 614-292-6170
f: 614-292-7774

Visit the Mollusc Division at:
http://www.biosci.ohio-state.edu/~molluscs/OSUM2

"Let me take you, baby, down to the riverbed,
  Gotta show you something go right to your head" - Spirit, I Gotta Line on You

So join the Freshwater Mollusc Conservation Society at:
http://ellipse.inhs.uiuc.edu/FMCS/index.html