Sowerby, G.B. 1869. Monograph of the Genus Castalia. Conchologica Iconica, or Illustrations of the shells of molluscous animals 17: pls. 1-3. Available electronically.
‘Hupé’ Sowerby, 1869. Conch. Icon. 17: pl. 3, sp. 12.
(error for Castalia acuticosta Hupé, 1857)
‘Lamarck’ Sowerby, 1869. Conch. Icon. 17: pl. 1, sp. 1, figs. 1a-c.
(reference to Castalia ambigua Lamarck, 1819)

Sowerby, 1869. Conch. Icon. 17: pl. 2, sp. 6.
Type(s): HOLOTYPE BMNH_1841-4-6-149, South Carolina.

Sowerby, 1869. Conch. Icon. 17: pl. 3, sp. 13, figs. 13a-c.
Type(s): HOLOTYPE BMNH_1965185, Amazon River.

Sowerby, 1869. Conch. Icon. 17: pl. 1, sp. 5.
Type(s): HOLOTYPE BMNH_1900-3-19-5, Hab._?
‘d’Orbigny’ Sowerby, 1869. Conch. Icon. 17: pl. 2, sp. 10.
(error for Castalia quadrilatera d’Orbigny, 1835)
‘d’Orbigny’ Sowerby, 1869. Conch. Icon. 17: index.
(error for Castalia lateriquadrata Sowerby, 1869)
‘Hupé’ Sowerby, 1869. Conch. Icon. 17: pl. 2, sp. 9, figs. 9a-b.
(error for Castalia multisulcata Hupé, 1857)

‘d’Orbigny’ Sowerby, 1869. Conch. Icon. 17: pl. 1, sp. 4.
Type(s): FIGURED SYNTYPE BMNH_1964402, Brazil.

Sowerby, 1869. Conch. Icon. 17: pl. 2, sp. 7, figs. 7a-b.
Type(s): HOLOTYPE BMNH_49.1.5.5, Hab._?

Sowerby, 1869. Conch. Icon. 17: pl. 1, sp. 3.
Type(s): HOLOTYPE BMNH_1841-1-26-5, British Guiana.
Castalia acuticostata [sic] Hupé, 1857 = Castalia ambigua
Castalia ambigua Lamarck, 1819+ Tetraplodon pectinatus Spix in Wagner, 1827
Castalia carolinensis Sowerby, 1869 = Castalia ambigua
Castalia cordata Humphrey
Castalia dolabella Sowerby, 1869 = Callonaia duprei
Castalia hanleyana Sowerby, 1869 = Castalia ambigua
Castalia lateriquadrata [sic] d’Orbigny, 1835 = Castalia ambigua
Castalia multicostata [sic] (Hupé, 1857) = Castalia multisulcata
Castalia ovata Sowerby, 1869 = Castalia psammoica
Castalia quadrata Sowerby, 1869 = Castaliella quadrata
Castalia retusa Hupé, 1857 = Castalia ambigua
Castalia schombergiana Sowerby, 1869 = Castaliella schombergiana
Castalia turgida (Hupé, 1857) = Castalia ambigua