Subgenus (Viaderella) A. Chavan, 1951

(3-4-4-0-20-4-1-7-2-0-0-0-0)
Ref. Bernard, 1983 p 29
Keen, 1971 p 125
Vaught, 1989 p 125
[see also as Genus]

perparvula (W. H. Dall, 1901)
(3-4-4-0-20-4-1-7-2-1-0-0-0)
Syn. Divaricella (Divalinga) perparvula W. H. Dall, 1901;
Lucina (Lucina) dentata authors [not G. P. Deshayes, 1850];
Lucina (Lucina) pisum R. A. Philippi, 1850 [not G. B. Sowerby, 1836, nor G. B. Sowerby in L. A. Reeve, 1850]
Ref. Bernard, 1983 p 29
Syn. Lucina (Lucina) pisum R. A. Philippi, 1850 [not G. B. Sowerby, 1836]
Ref. Keen, 1971 p 125