Triforis grimaldii Dautzenberg & H. Fischer, 1906: 41, pl. 3, fig. 9–10.
Triforis (Biforina) grimaldii Dautzenberg & H. Fischer, 1906 — Kobelt 1908: 134, pl. 120, fig. 21–22.
Triforis (Monophorus) grimaldii Dautzenberg & H. Fischer, 1906 — Dautzenberg 1927: 107.
Triphora grimaldii Dautzenberg & H. Fischer, 1906 — Nordsieck 1968a: 74, fig. 44.01.
Triphora grimaldi Dautzenberg & H. Fischer, 1906 — Richter & Thorson 1975: 134, pl. 6, fig. 41–42.
Triphora grimaldii Dautzenberg & H. Fischer, 1906 —Nordsiek 1982: 156, fig. 44.05.
Type locality. Cape Verde, Boa Vista, 91 m deep.
Type material. Type material not located so far.
Distribution. Ascension Island (Rosewater 1975), Italy (Richter & Thorson 1975), Cape Verde (Dautzenberg & Fischer 1906; Kobelt 1908; Nordsieck 1968a), Portugal, Azores (Nordsieck 1968b; Nordsieck 1982), Spain, Canary Islands (Dautzenberg & Fischer 1906; Kobelt 1908; Nordsieck 1968a; Nordsieck 1968b; Nordsieck 1982).
Remarks. Triforis grimaldii Dautzenberg & H. Fischer, 1906 is widely accepted as a junior synonym of Cerithium melanura C.B. Adams, 1850 (e.g. Bouchet 1985; Fernandes & Pimenta 2020).