Posted: Nov 23 2010

 Busycon sinistrum Hollister, 1958, Lightening Whelk

3/20/18:  The generic name has apparently changed, but dispute still remains as to the status of the species/subspecies naming.  Here's what WoRMS has to say as of this date:


Older name (accepted):  Sinistrofulgur perversum (Linnaeus, 1758). 

Newer name (accepted):  Sinistrofulgur sinistrum (Hollister, 1958)

Elsewhere, Sinistrofulgur sinistrum is also presented as a subspecies as Busycon perversum sinistrum Hollister, 1958.

So, take your pick.  I haven't read it, but see the below which supports they are all one:

For more photos see jaxshells

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