Crenilabium pacificus

Helwerda, Renate A., 2015, Acteonidae, Bullinidae and Ringiculidae (Gastropoda: Heterobranchia) from the Plio-Pleistocene of the Philippines, Zootaxa 3990 (2), pp. 197-220 : 206

Crenilabium pacificus (Kuroda & Habe in Habe, 1961)

( Figure 19 )

1961 Lissactaeon pacificus nov. spec.—Kuroda & Habe in Habe: p. 87, pl. 42, fig. 11.

2000 Crenilabium pacificus (Kuroda & Habe in Habe, 1958)—Hori: p. 735, pl. 366, fig. 17. 2008 Crenilabium pacificus Kuroda & Habe in Habe, 1961—Valdés: p. 597–599, figs. 4A–E, 5.

Material. Anda2 (1) RGM 961.727, Anda4 (3) RGM 961.728, AndaDeVos (1) RGM 961.729, AndaCliff3 (1) RGM 961.730, Roxas (3) RGM 961.731, Tiep2 (2) RGM 961.732.

Characterization. Shell tall, H> 4.26 mm, W 1.89 mm; protoconch slightly elevated, 1.2 whorl, DP 0.69 mm, DN 0.38 mm; teleoconch with brownish rim below suture, separated from rest of whorl by weak spiral rib; rest of whorl sculpted with weak spiral grooves, growing stronger towards base; columella with weak fold; umbilicus closed.

Distribution. Off the coast of Choshi, Chiba, Japan, 100–150 m (Kuroda & Habe in Habe 1961). The Sea of Kashima-nada and Sado Island in Japan Sea to Kyushu, sand bottom, 100–300 m ( Hori 2000). Philippines, New Caledonia, Loyalty Ridge, Fiji and Tonga, 440–2050 m, live 760–790 m ( Valdés 2008).

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.