Mytilus bicolor Bruguière, 1792
Bruguière, 1792. Actes Soc. Nat. Hist. Paris 1(1): 126.

Mytella bicolor — Huber (2010), WoRMS (2011)
Mytella guyanensis — Malacolog (2011)

Modiola guyanensis Lamarck, 1819
Lamarck, 1819. Hist. Natur. Anim. sans Vert. 6: ??.

Mytella guyanensis — Soot-Ryen (1955), Olsson (1961), Keen (1971), Ramírez et al. (2003), WoRMS (2011), Malacolog (2011)
Mytella bicolor — Huber (2010)

Modiola brasiliensis Gray, 1825
Gray, 1825. Ann. Phil. 9: ??.

Mytella brasiliensis — Huber (2010), WoRMS (2011)
Mytella guyanensis — Malacolog (2011)

Modiola semifusca Sowerby, 1825
Sowerby, 1825. Zool. Jour. 2: 543.

Mytella bicolor — WoRMS (2011)
Mytella guyanensis — Malacolog (2011)

Modiola sinuosa King & Broderip, 1832
King & Broderip, 1832. unknown publication: ??.

Mytella guyanensis — Soot-Ryen (1955), Keen (1971), Malacolog (2011)
Mytella brasiliensis — WoRMS (2011)

Mytilus umbonata Anton, 1838
Anton, 1838. unknown publication: ??.

Mytella brasiliensis — WoRMS (2011)

Modiola brasiliensis var. mutabilis Carpenter, 1857
Carpenter, 1857. Maz. Shells: ??.
(intro'd as intra-sp. of Modiola brasiliensis Gray, 1825)

Mytella guyanensis — Soot-Ryen (1955), Keen (1971), Malacolog (2011)
Mytella bicolor — WoRMS (2011)

Modiola subfuscata Clessin, 1887
“G.B. Sowerby” Clessin, 1887. Malak. Blatt. 9: ??.

Mytella bicolor — WoRMS (2011)
Mytella guyanensis — Malacolog (2011)

Modiola guayanensis Beauperthuy, 1967
‘Lamarck’ Beauperthuy, 1967. Bol. Inst. Oceanogr. Univ. Oriente 6(1): 61.
(error for Modiola guyanensis Lamarck, 1819)