Nihonia mirabilis (Sowerby, 1914) (Figure 15)

Pleurotoma (Surcula) mirabilis Sowerby, 1914: 445, pl. 18, fig. 1.

Nihonia mirabilis (Sowerby, 1914) . Powell, 1969: 331, pl. 192, fig. 15, pl. 254, figs. 3, 4.

Material examined. ECS. (1). 1 spm, CN V519B-62, 27 °30'N, 124°00'E, 105 m, fine sand, AT, coll. Zhican TANG, 27 August 1976; (2). 1 spm, CN V577B-23, 29 °32'N, 127°30'E, 117 m, fine sand, AT, 29 June 1978; (3). 1 spm, CN V571B-28, 26 °28'N, 123°00'E, 120 m, coarse sand and shell debris, AT, coll. Shaozong WU, 11 June 1978.

Measurements (mm)

* Nihonia santosi Shuto, 1969 (Figures 3, 4)

Nihonia santosi Shuto, 1969: 186, text fig. 34, pl. 19, figs. 18, 19, 21; Powell, 1969: 332, pl. 254a.

Length Width Aperture W/L A/L 20.2 5.7 11.1 0.28 0.55 FIGURES 9–15. 9, Turricula javana (CN 56-818-1); 10, 11, Turricula nelliae spurius (CN 56-818-2); 12, 13, Marshallena philippinarum (CN SSBV22-5); 14, Nihonia australis (CN 58M-327-1); 15, Nihonia mirabilis (CN V577B-23).

Distribution. ECS; Philippines.

Remarks. The specimen agrees well with the descriptions of Shuto (1969) in detail, with exception of the shell height and number of teleoconch-whorls. The height is only 20.2 mm, much shorter than the 78 mm of the holotype and the 69.4 mm of the paratype. The number of the teleoconch-whorls is seven, less than the “more than eight” in the holotype. The present specimen seems a juvenile. This species was not previously recorded from the China seas.