Baker, F. 1913. The land and fresh-water mollusks of the Stanford Expedition to Brazil. Proceedings of the Academy of Natural Sciences of Philadelphia 65: 618-672. Available electronically.

F. Baker, 1913. Proc. Acad. Nat. Sci. 65: 668, pl. 27, figs. 3-4.
Type(s): SYNTYPE ANSP_109370, Rio Tapajoz, Pinhel, Brazil.

F. Baker, 1913. Proc. Acad. Nat. Sci. 65: 667, pl. 27, figs. 1-2.
Type(s): HOLOTYPE (MONOTYPY) ANSP_109369, Island of Mexiana, Brazil.

F. Baker, 1913. Proc. Acad. Nat. Sci. 65: 664, pl. 27, fig. 8-9.
Type(s): HOLOTYPE (MONOTYPY) ANSP_109373, Rio Jamauchim, Brazil.

F. Baker, 1913. Proc. Acad. Nat. Sci. 65: 665, pl. 27, figs. 5-7.
Type(s): SYNTYPE ANSP_109371, Rio Jamauchim, ParĂ¡, Brazil.

F. Baker, 1913. Proc. Acad. Nat. Sci. 65: 666, pl. 22, figs. 16-17.
Type(s): LECTOTYPE ANSP_109372, Rio Jamauchim, Brazil.