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Bariosta vittatis Rafinesque, 1831

Rafinesque, 1831. Continuation: 2.
Rafinesque, 1864. [in] Binney & Tryon, reprint: 73.

Bariosta vittatis — Simpson (1900), Simpson (1914)
Actinonaias pectorosa — Ortmann & Walker (1922)
Lampsilis (s.s.) pectorosa-biangularis — Frierson (1927)

Unio pectorosus Conrad, 1834

Conrad, 1834. New Fresh-Water Shells: 37, pl. 6, fig. 1.
Conrad, 1836. Monogr. Fam. Unionidae 1(3): 25, pl. 11, fig. 1.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 254.

Lampsilis (sec. Eurynia) perdix — Simpson (1900)
Lampsilis (Eurynia) perdix — Simpson (1914)
Nephronaias pectorosa — Ortmann (1918)
Actinonaias pectorosa — Ortmann & Walker (1922), Ortmann (1924), Ortmann (1925), Burch (1975), R.I. Johnson (1980), ... Smith et al. (2019), Klymus et al. (2020), Bieler (2021), FMCS (2021), Hopper et al. (2023)
Lampsilis (s.s.) pectorosa — Frierson (1927)
Lampsilis (s.s.) pectorosa pectorosa — Haas (1969)
Ortmanniana pectorosa — Graf & Cummings (2021)
Lampsilis pectorosa — FMCS (2025)

Unio perdix Lea, 1834

Lea, 1834. Trans. Amer. Phil. Soc. 5 [O. 1]: 72 [184], pl. 11, fig. 31.
Type(s): FIGURED SYNTYPE USNM_84857, Harpeth R., Tenn.

Lampsilis (sec. Eurynia) perdix — Simpson (1900)
Lampsilis pictus — Ihering (1901)
Nephronaias perdix — Ortmann (1912)
Lampsilis (Eurynia) perdix — Simpson (1914)
Nephronaias pectorosa — Ortmann (1918)
Actinonaias pectorosa — Ortmann & Walker (1922), Ortmann (1924), Burch (1975), Parmalee & Bogan (1998), Williams et al. (2008)
Lampsilis (s.s.) pectorosa — Frierson (1927)
Lampsilis (s.s.) pectorosa pectorosa — Haas (1969)

Unio vittatus ‘Rafinesque’ of Authors

‘Rafinesque’ of Authors.
Ferussac, 1835. Mag. Zool. 5(59-60): 29.
Lea, 1852. Synopsis Fam. Naiades: 58.
Lea, 1870. Synopsis Fam. Naiades: 92.
(error for Bariosta vittatis Rafinesque, 1831)

Unio biangularis Lea, 1840

Lea, 1840. Proc. Amer. Phil. Soc. 1: 288.
Lea, 1842. Trans. Amer. Phil. Soc. 8 [O. 3]: 197, pl. 9, fig. 8 [as ‘biangulatus’].

Lampsilis (s.s.) biangulatus — Simpson (1900)
Lampsilis (s.s.) biangularis — Simpson (1914)
Nephronaias pectorosa — Ortmann (1918)
Actinonaias pectorosa — Ortmann & Walker (1922), Burch (1975), Parmalee & Bogan (1998), Williams et al. (2008), Bieler (2021)
Lampsilis (s.s.) pectorosa-biangularis — Frierson (1927)
Lampsilis (s.s.) pectorosa biangularis — Haas (1969)

Unio biangulatus Lea, 1840

Lea, 1840. Proc. Amer. Phil. Soc. 1: 288 [as ‘biangularis’].
Lea, 1842. Trans. Amer. Phil. Soc. 8 [O. 3]: 197, pl. 9, fig. 8.
(error for Unio biangularis Lea, 1840)
Type(s): HOLOTYPE USNM_86120, Caney Fork, Tennessee.

Lampsilis (s.s.) biangulatus — Simpson (1900)
Lampsilis (s.s.) biangularis — Simpson (1914)
Nephronaias pectorosa — Ortmann (1918)
Actinonaias pectorosa — Ortmann & Walker (1922), Parmalee & Bogan (1998), Williams et al. (2008), Bieler (2021)
Lampsilis (s.s.) pectorosa-biangularis — Frierson (1927)
Lampsilis (s.s.) pectorosa biangularis — Haas (1969)