Ptychobela vexillium (Habe and Kosuge, 1966)

Li, Bao Quan, Kilburn, Richard N. & Li, Xin Zheng, 2010, Report on Crassispirinae Morrison, 1966 (Mollusca: Neogastropoda: Turridae) from the China Seas, Journal of Natural History 44 (11 - 12), pp. 699-740 : 736

Ptychobela vexillium (Habe and Kosuge, 1966)

( Figure 6E )

Brachytoma vexillium Habe and Kosuge, 1966 (January) , p 96, pl. 38, fig. 15. Type loc. not given [= Anpin , Formosa [ Taiwan], fide Habe and Kosuge 1966b (May)].

Brachytoma vexillum Habe and Kosuge, 1966b (May) , p 321, pl. 29, fig. 5. Type loc.: Anpin , Formosa [ Taiwan].

Ptychobela vexillum: Springsteen and Leobrera 1986, p 279 , pl. 80, fig. 2.

Inquisitor vexillum: Chang and Wu 2000, p 19 , fig. 19.

Material examined

SCS. One specimen, CN 54–832 , Wushi (Guangdong), 11 December 1954 ; 3 spms, Xincun, Hainan Island; 1 spm, CN 55-561 , Sanya, Hainan Island , 16 April 1955 ; 1 spm, CN 55-691 , Yingehai (Hainan Island ), 6 May 1955 ; 1 spm, CN 55-223 , Fangcheng (Guangxi), 7 February 1955 ; 1 spm, CN N31 B-13, 20°12′ N, 110°30′ E, coarse sand, shell debris, 64 m, AT, 17 April 1959 ; 1spm, CN 2–23 , 20°48′ N, 110°45′ E, muddy sand, 21 m, AT, 14 January 1959 ; 1 spm, CN 2–23 , 20°48′ N, 110°45′ E, muddy sand, 21 m, AT, 14 January 1959 .

Beibu Gulf. Five specimens, CN K237 B-47, 18°45′ N, 108°30′ E, muddy sand, 22 m, AT, 11 July 1960 ; 1 spm, CN Q195 B-36, 20°45′ N, 109°30′ E, sandy mud, 46 m, AT, 20 April 1960 ; 1 spm, CN Q206 B-75, 18°45′ N, 108°15′ E, muddy sand, 41 m, AT 18 May 1960 ; 2 spms, CN X74 B-29, 19°00′ N, 105°45′ E, muddy sand, 12.8 m, AT, 11 February 1960 ; 1 spm, CN K264 B-16, 19°15′ N, 108°30′ E, muddy sand, 38 m, AT, 17 October 1960 ; 1 spm, CN Q126 B-76, 20°05′ N, 109°45′ E, coarse sand, 40 m, AT, 8 February 1960 ; 4 spms, CN X202 B-18, 19°40′ N, 107°30′ E, fine sand, 46 m, AT, 14 April 1962 ; 2 spms, CN X240 B-11, 19°00′ N, 108°30′ E, coarse sand and silt, 20 m, AT, 19 August 1962 .

Measurements

See Table 1.

Distribution

SCS; Japan, Philippines.

Remarks

This species shows resemblances to both Ptychobela suturalis ( Gray, 1838) and Ptychobela nodulosa (Gmelin, 1791) . Ptychobela suturalis differs in its strongly constricted siphonal canal and stronger subsutural cord. Ptychobela nodulosa , a species mainly characteristic of the Bay of Bengal, has a distinctive colour pattern, comprising a pale peripheral band, with a darker band on both sides, and more rib-like peripheral nodules.

Although the specific name “ vexillium ” was probably a misspelling, this is not indicated in the text, and it has five months priority over “ vexillum ”.

Figures

Figure 6. (A) Syntype of Pleurotoma (Drillia) concolor Smith, 1877, BMNH 1964227, Moluccas; 42.1 × 11.2 mm; (B) Ptychobela suturalis (Hainan Island); (C, D) Ptychobela resticula sp. nov. (holotype, SCS, CN S208B-42, 83 m, 41.5 × 14.3 m); (E) Ptychobela vexillium (SCS, CN N31B-13).