Dear Paul,
 
The rules of taxonomy allows tu use genera which distinguish from another
only in one letter. What you think for the moment of Cancellaria, Cancellarium
Cancellarius is a question where I have to think on it, as I don't know for
the moment if these would be imendations of names. There would be
better to use for a new genus Cancelaria with one l or to replace another
letter with another letter. maybei Cancallaria, or what you mean. Imendations
or grammatical changes are not allowed. Later I hope that I can explain you
better when I proofed my Englsh or studies again the rules of taxonomy and
if I've discussed with some other specialist of nomenclature. Promised.
yours Helmut
 
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> Do the rules of taxonomy allow for generic names that are identical
> except for the gender-specific suffix?  For example, since we already
> have the molluscan genus Cancellaria, would it be allowable to name a
> new genus of mollusks (or other animals) Cancellarium, or
> Cancellarius?
> Seems like this could cause of a lot of confusion.
> Source of my question:
> Nassarius (Nassariidae)
> Nassaria (Buccinidae)
>
> Paul M
>