According to Gary Coovert, Gibberula novemprovincialis (Yokoyama, 1928)
[not 1922] is a synonym of tokaiensis Makiyama, 1927.
I am looking at an entry in the standard catalog: it is Marginella
(GR)
>novemprovincialis Yokohama, 1922.
> I have also seen shells attributed to "Yokoyama". What I need to
> know is: are they both correct? Is one a misspelling for the other? If
> so, which is correct?
> Thanks,
> Art
John Wolff
2640 Breezewood Dr.
Lancaster, PA 17601