Cyclas cardissa Prime, 1852
Prime, 1852. Proc. Boston Soc. Nat. Hist. 4: 160.
Prime, 1853. Proc. Boston Soc. Nat. Hist. 4: 277.

Musculium securis — Burch (1975)

Cyclas securis Prime, 1852
Prime, 1852. Proc. Boston Soc. Nat. Hist. 4: 160.
Prime, 1852. Ann. Lyc. Natur. Hist. 5: 218, pl. 6.
Prime, 1853. Proc. Boston Soc. Nat. Hist. 4: 276.
Prime, 1865. Smithsonian Misc. Coll. (145): 49, fig. 47.

Sphaerium securis — Herrington (1962), Bogan (2010), Bespalaya et al. (2017)
Sphaerium (Musculium) securis — Clarke (1973), Lee & Ó Foighil (2003), Stunžėnas et al. (2011), Bespalaya et al. (2023)
Musculium securis — Burch (1975), Mackie et al. (1980), Turgeon et al. (1998), Cooley & Ó Foighil (2000), Korniushin & Glaubrecht (2002), ... ITIS (2012), Clewing et al. (2013), Ram et al. (2014), Fuentealba-Jara et al. (2017), Saito et al. (2022)

Cyclas sphaerica Prime, 1853
‘Anthony’ Prime, 1853. Proc. Boston Soc. Nat. Hist. 4: 275 [as ‘sphærica’].
‘Anthony’ Prime, 1865. Smithsonian Misc. Coll. (145): 50, fig. 49.

Sphaerium securis — Herrington (1962)
Sphaerium (Musculium) securis — Clarke (1973)
Musculium securis — Burch (1975)

Cyclas crocea Lewis, 1854
Lewis, 1854. Proc. Boston Soc. Nat. Hist. 5: ??.

Musculium securis — Burch (1975)

Musculium parvum Sterki, 1909
Sterki, 1909. Nautilus 23(5): ??.

Sphaerium securis — Herrington (1962)
Musculium securis — Burch (1975)

Musculium australe Sterki, 1916
Sterki, 1916. Ann. Carnegie Mus. 10(3/4): ??.

Sphaerium securis — Herrington (1962)
Musculium securis — Burch (1975)

Musculium sphaericum var. succineum Sterki, 1916
Sterki, 1916. Ann. Carnegie Mus. 10(3/4): ??.
(intro'd as intra-sp. of Cyclas sphaerica Prime, 1853)

Musculium securis — Burch (1975)