Gemmula cf. gemmulina (von Martens, 1902)

(Pl. 4, figs. 6-7)

Gemmula (Gemmula) gemmulina von Martens, 1902: 238; Powell 1964: 260, pl. 200, fig. 2, pl. 201, figs 1, 2.

Material examined. Bohai Gulf. 1 spm, CN H238B-7, coarse sand, 20 m, 9. VII. 1959. Beibu Gulf. 1 spm, CN N158B-83, 18 º15´N, 108º45´E, muddy coarse sand, 38 m, AT, 13. III. 1960. SCS. 1 spm, CN Q101B, 23º15´N, 117º00´E, sandy mud, 23 m, AT, 20. XI. 1959; 1 spm, CN 2-42, 18 º45´N, 110º45´E, shell debris & mud, 118.5 m, AT, 25. I. 1959; 1 spm, CN R25B-15, 19 º00´N, 110º45´E, sandy mud, 80 m, AT, 10. VII. 1959.

Measurements (mm).

Distribution. Bohai Gulf, South China Sea; Sumatra, Philippines.

Remarks. The present specimens are very similar to Gemmula gemmulina Powell 1964 in shell form. The only difference in the number of the gemmulate nodes: the present specimens have nearly 30 gemmulate nodes, 20 more than in the types. The species was also found from the South China Sea (off Dongsha Islands (Pratas Is.))(Powell (1966). So we refer it to Gemmula gemmulina von Martens, 1902 rather than a new species. The holotype was collected from west coast of Sumatra at 677 m depth, much deeper than the present specimens in the depth 20–118.5 m.

* Gemmula gilchristi (Sowerby, 1902) (Pl. 4, fig. 5)

Pleurotoma gilchristi Sowerby, 1902: 99, pl. 2, fig. 9.

Gemmula gilchristi.— Powell 1964: 249, pl. 189, figs. 1, 2.

Material examined. ECS. 1 spms, CN F14B, 29º30´N, 124º00´E, fine sand, 70 m, AT, 29. VII. 1988. SCS. 1 spm, CN Q101B-48, 23 º15´N, 117º00´E, Shantou, Guangdong Province, muddy sand, 23 m, AT, 20. XI. 1959; 1 spm, 19º30´N, 111º15´E, sandy mud, 90 m, 28. I. 1959.

Measurements (mm).

Distribution. East and South China Seas; South Africa, Zanzibar, Andaman Islands, Japan.

Remarks. The present specimens agree with Powell’s (1964) descriptions and figures (pl. 189, figs. 1, 2) of G. gilchristi from South Africa, although their shells are white, the subsutural fold is uniform light yellow. Based on the holotype and four other specimens collected from Japan, Durban and Andaman, Powell (1964) noted that the color of this species is uniform golden to light reddish brown for shallow water shells; the topotypes are white with pale brown between the peripheral gemmules.