>      I have been working with specimens of Spondylus from the
>Philippines and have been having
>difficulties distinguishing between the following:
>
>Spondylus squamosus Schreibers, 1793
>Spondylus barbatus Reeve, 1856
>Spondylus butleri Reeve, 1856
>Spondylus versicolor Schreibers, 1793
>
>I don't have access to Lamprell's book, but would like to know key
>features useful in
>distinguishing between these species.  E-mailed information,
>literature citations, or photocopies
>are all welcome.  Any assistance you can provide will be greatly
>appreciated.  Thanks in advance
>and I'll look forward to hearing from you. :)

You'll never make sense of them using Lamprell.

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