Guildfordia yoka Jousseaume, 1888

(Figures 69–73)

2000 Guildfordia yoka Jousseaume, 1888 —Sasaki: p. 101, fig. 51.

2008 Guildfordia yoka delicata Habe & Okutani, 1983 —Kreipl & Alf: p. 250, pl. 70, fig, 5.

Material. Anda 1 (42); Anda 2 (38); Anda 3 (24); Anda 4 (18); Anda 6 (4); AndaDeVos (4); AndaClif1 (1); AndaClif3 (4); Roxas (1).

Characterization. Shell almost planispiral, with reddish surface, H 5.9 mm, W 15.7 mm; P planispiral, 1.1 whorls, two discontinuous spiral ribs and granulate surface in between, DN 0.16–0.23 mm; slightly elevated terminal varix; T 7–9 long spines per whorl, initially triangular, thin hollow, on later whorls elongate and massive; rows of knobs below the suture; umbilicus covered with white, shiny callus.

Distribution. Today the species occurs in Central southern Japan and southward to Indo-West Pacific, at 200– 500 m depth on sand bottom (Sasaki 2000). It has also been reported from the Philippines, Aliguay Island, from 50–150 m depth (Kreipl & Alf 2008).