Obrussena bracteata ( Iredale, 1925 )

Helwerda, Renate A., 2015, Acteonidae, Bullinidae and Ringiculidae (Gastropoda: Heterobranchia) from the Plio-Pleistocene of the Philippines, Zootaxa 3990 (2), pp. 197-220 : 208

Obrussena bracteata ( Iredale, 1925)

( Figure 20 )

1925 Obrussa bracteata nov. spec.—Iredale: p. 269, pl. 42, fig. 15.

1952 Obrussena moeshimaensis nov. spec.—Habe: p. 71–72, fig. 6.

2000 Obrussena moeshimaensis Habe, 1952 —Hori: p. 735, pl. 366, fig. 25. 2008 Obrussena bracteata ( Iredale, 1925) —Valdés: p. 600, figs. 4F–I, 5. 2010 Obrussena moeshimaensis Habe, 1952 —Willan & Tagaro: p. 34, pl. 708, fig. 1.

Material. Anda1 (1) RGM 961.733, Anda4 (2) RGM 961.734, Anda6 (2) RGM 961.735, AndaDeVos (1) RGM 961.736, Tiep3 (2) RGM 961.737

Characterization. Shell globose; H 1.54 mm, W 1.21 mm; protoconch low, 1.4 whorl, DP 0.63 mm; nucleus small, DN 0.19 mm; teleoconch strongly sculpted with punctuated spiral grooves forming a reticulate network; aperture wide; umbilicus narrow.

Distribution. Off the coast of Narrabeen and Babel Island, New South Wales, Australia, 119–146 m ( Iredale 1925). Pleistocene of Moeshima, Japan ( Habe 1952). Japan Sea and South China Sea, 50–200 m ( Hori 2000). New Caledonia, Tonga, Vanuatu and Wallis and Futuna, 182–675 m, live 482–498 m ( Valdés 2008). Mactan Island, Philippines, 110 m ( Willan & Tagaro 2010).

Remarks. Obrussena moeshimaensis Habe, 1952 was synonymized with Obrussena bracteata ( Iredale, 1925) by Valdés (2008), because of the former species being small specimens of the latter species.

Figures

FIGURE 19 – 22. 19. Crenilabium pacificus (Kuroda & Habe in Habe, 1961). RGM 961.747. Locality Tiep 2. (a) rear view, (b) apertural view, (c) basal view, (d) apical view. 20. Obrussena bracteata (Iredale, 1925). RGM 961.748. Locality Anda 6. (a) rear view, (b) apertural view, composite, (c) basal view, (d) apical view. 21. Bullina virgoides nov. spec .. Holotype RGM 961.749. Locality Tiep 2. (a) rear view, (b) apertural view, (c) basal view, (d) apical view. 22. Bullina virgoides nov. spec .. Paratype RGM 961.846. Locality Tiep 2. (a) rear view, (b) apertural view.