David Reid's book is excellent, but it won't answer the question about the
Caribbean littorinids. Reid treats only Littorina in the strict sense,
whereas the species that Phil Poland inquired about are now in the genus
Nodilittorina.
 
>If one is interested in the Littorina I would recommend getting a copy of
>Systematics and Evolution of Littorina by David G. Reid published in 1996.
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Gary Rosenberg, Ph.D.                     [log in to unmask]
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