Subgenus (Bolma) J. A. Risso, 1826
(5-4-1-3-2-12-2-4-1-0-0-0-0)

asteriola (W. H. Dall, 1925)
(5-4-1-3-2-12-2-4-1-1-0-0-0)
Little Star Bolma
Ref. Abbott & Dance, 1982 p 50 c

aureola (C. Hedley, 1907)
(5-4-1-3-2-12-2-4-1-2-0-0-0)
Bridled Bolma
Ref. Abbott & Dance, 1982 p 49 c

bartschi W. H. Dall, 1913
(5-4-1-3-2-12-2-4-1-3-0-0-0)
Bartsch's Bolma
Ref. Abbott & Dance, 1982 p 49 c

girgyllus (L. A. Reeve, 1861)
(5-4-1-3-2-12-2-4-1-4-0-0-0)
Girgyllus Star-shell
Ref. Abbott & Dance, 1982 p 51 c

jacquelineae (Marche-Marchad, 1957)
(5-4-1-3-2-12-2-4-1-5-0-0-0)
Jacqueline Bolma
Ref. Abbott & Dance, 1982 p 49 c

tayloriana (E. A. Smith, 1880)
(5-4-1-3-2-12-2-4-1-6-0-0-0)
Taylor's Star-shell
Ref. Abbott & Dance, 1982 p 51 c