Mastonia squalida Kosuge, 1962

Mastonia squalida Kosuge, 1962a: 126, pl. 8, fig. 19, textfig. 12–13.

Type locality. Japan, Amami Islands, Ankyaba, Setouchi–machi .

Type material. NSMT-Mo 12253, holotype . NHMUK 1966145, paratype .

Distribution. China Sea (Zongguo & Mao 2012), French Polynesia (Tröndle & Boutet 2009; Boutet et al. 2020), Japan (Kosuge 1962a; Higo et al. 1999; Okutani 2000; Higo et al. 2001; Chang & Wu 2005; Okutani 2017; Albano et al. 2019), Red Sea (Dekker & Orlin 2000), Taiwan (Chang & Wu 2005; Chang 2006d).

(†) Mastonia squamosa Kosuge, 1962

Mastonia squamosa Kosuge, 1962a: 125, pl. 8, fig. 15, textfig. 10–11.

Triphora (Mastonia) squamosa (Kosuge, 1962) — Ladd 1972: 48, pl. 12, fig. 16.

Type locality. Japan, Amami Islands, Ankyaba, Setouchi –machi.

Type loction. NSMT-Mo 12252, holotype .

Distribution. Japan (Kosuge 1962a; Ladd 1972; Higo et al. 1999; Higo et al. 2001), Marshall Islands (Ladd 1972; Kay & Johnson 1987), Samoa (Ladd 1972).

Geological age. Holocene (Ladd 1972; Kay & Johnson 1987).