I was able to visit that shop twice before it closed and can attest
that customers certainly had access to the lots, both  out in the open
and in the cabinets, and "mixing " was definitely possbile.

On 1/15/11, Michael Hollmann <[log in to unmask]> wrote:
> Dear Harry and others interested in Neverita distribution in the S.E. US,
>
> Concerning the geographical distribution of Neverita delessertiana recently
> discussed on Conch-L, I rechecked the one lot of Neverita delessertiana we
> reported from East Florida (Cocoa, central East Florida) in our 2006 paper
> (Hülsken et al., Zootaxa 1257, pp. 8, 20) cited by you in your response to
> Marloąs question.
> The lot mentioned in the paper contains 6 specimens allegedly collected in
> 1946 in łCocoa, Florida˛, 3 of which clearly are Neverita delessertiana
> while the other 3 are equally clearly Neverita duplicata. However, the lot
> has been purchased (in 1993) from łThe Sea˛, a now defunct shellshop in San
> Pedro, Los Angeles. As many of the lots for sale in that shop were located
> in cabinets accessible to the customers, it cannot be excluded that this
> particular lot might have gotten mixed with specimens originating from
> another locality, possibly a Gulf of Mexico locality. Therefore, one should
> not put too much weight on this particular piece of evidence for an East
> coast occurence of N. delessertiana.
>
> Best regards,
>
> Michael
>
> --
>
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>       Michael Hollmann
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>       D-58454 Witten
>       Germany
>
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>
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