It's Röding (with an umlaut) which can also be spelled Roeding.
 
Peter Whipple
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At 05:24 PM 3/26/98 -0500, Paul Monfils wrote:
>Thanks Gert!
>
>How interesting!  Apparently Lamarck proposed Nassa as a new genus
>for the species Linnaeus had named Buccinum mutabile (which we now
>know as Nassarius mutabilis), in 1799.  However, the Muricid genus
>Nassa, named by Roding, dates from 1798, just a year earlier!  I
>would guess (but will wait to hear from the pros) that this is why
>the Muricid genus Nassa is valid, but the Nassariid genus Nassa has
>been replaced by Nassarius.  This raises yet another mini-question.
>Is the author's name spelled Roding, or Roeding?  I see it both ways.
>
>Paul M.