Alvania angioyi van Aartsen, 1982

(Fig 19G, H)

Alvania angioyi van Aartsen, 1982: 4

Alvania watsoni —Dautzenberg, 1889: 51, pl. 3, fig. 8 (non Schwartz in R. B. Watson, 1873)

Other references.

Alvania angioyi; Gofas, 1990: 113, figs 7a-c, figs 54–57; Ávila et al., 2002: 362, figs 41–43; Ávila, 2005: 264–267, pl. I, figs 1–13 and pl. II, figs 1–6; Martins et al., 2009: 41, figs 133, 134.

Type Material. Lectotype and 20 paralectotypes (coll. H. Fischer ex Dautzenberg, MNHN), type locality: Faial, bay of Horta 15–20 m depth, ‘Hirondelle sta 103’, Azores; paralectotypes from shore sand of Sao Miguel (Dautzenberg ex d’Aguyar, MOM) and from off Pico 38°34’30”N– 28°06’15”W, 1287 m (“Hirondelle” st. 112, MOM) (Gofas, 1990).

Material examined. Azores: Ponta Delgada (Saõ Miguel Is.), beached, 7 sh (JT, JDO); Biscoitos (Terceira), 1 m depth, 24 sh (JT, JDO); unprecised locality, 18 m depth, 13 shells (JT, JDO); unprecised data, 3 sh (MO).

Distribution. It is endemic to the Azores.

Remarks. A. angioyi lives in algal facies, more commonly in shallow waters, can reach 35 m depth (Ávila, 2005: 51). The sculpture of the teleoconch is rather variable. It has three spiral cords above the aperture, rarely four. A common variant has weak or almost absent axial sculpture. It is very similar to A. canariensis, from which it differs in the protoconch sculpture, with marked spirals (Ávila 2005).