Turris undosa ( Lamarck, 1816 )

Kilburn, Richard N., Fedosov, Alexander E. & Olivera, Baldomero M., 2012, Revision of the genus Turris Batsch, 1789 (Gastropoda: Conoidea: Turridae) with the description of six new species, Zootaxa 3244 (1), pp. 1-58 : 47-49

Turris undosa ( Lamarck, 1816)

Plate 29 , figs A–F

Pleurotoma undosa Lamarck, 1816: 8 , pl. 439, fig. 5; Lamarck 1822: 95; Kiener 1839: 13, pl. 3, fig. 2; Weinkauff 1875: 18, pl. 3, figs 7–8. Type loc. “Oc. indien” by Lamarck

Turris undosa ; Li & Li 2007: 67 , pl. 1, fig. 6,

Turris cf. T. undosa ; Olivera & Sysoev 2008: pl. 682, fig. 9.

? Pleurotoma raffrayi Tapparone-Canefri, 1878: 246 , pl. 6, fig. 1. Type loc.: Port Dorey, Papua New Guinea.

DESCRIPTION: Spire high and orthoconoid, base relatively short and contracted, b/l 0.27–0.32, a/l 0.33–0.41; whorls rendered angular by a submedian peripheral keel. Suture very shallow. Outer lip strongly convex, straightening on siphonal canal. Anal sinus somewhat shallowly linguiform, widening only at lip, directed slightly anteriorly; edge of outer lip with fluted crenations; siphonal canal spout-like, usually with a narrow false umbilicus. Subsutural cord depressed, weakly convex, slightly undulating towards lip, bearing 2–3 fine spiral ridges; sulcus narrow and shallow (but deeper than suture). Sinus cord much narrower than peripheral cord, ledge-like, with a low median ridge; peripheral cord much stronger and more angular than others; last whorl with 4 spiral cords; base of spire whorls with 1–2 thin, widely spaced spiral ridges. First few whorls evidently with 3 weak spiral cords. Base of last whorl with 12–17 irregular, granular cords, upper ones strongest, with wide intervals, each interval with a thin ridge, those on fasciole (9–10) finer and denser. Interstices with oblique collabral threads, outer lip preceded by coarse, crenulated growth lines.

When fresh, cream-coloured, apex and back of outer lip tinged with brown, with opisthocline stripes or bands of dark brown, breaking into rows of dots on base; sinus cord with short bars of dark brown, which become arcuate towards sinus; base, aperture and columella tinged with lilac.

Attains 74.6 mm.

Protoconch small (breadth ca 1.60– ca 1.90 mm), olive-brown, damaged in all seen.

TYPES: P. undosa : Holotype (labelled by Lamarck) MHNG 1097/65 , annotated “ Oc. indien ” . P. raffrayi : types lost (originally in Raffray collection but now not amongst his material in MNHN) .

DISTRIBUTION: Indonesia and Philippines, north to the Beibu Gulf in China ( Li & Li, 2007).

OTHER MATERIAL EXAMINED: PHILIPPINES: Off Panglao Is, gill nets in 200–400 fath. [366–732 m] ( NMSA: BO colln, ex Q. Hora); Olango Is.(?), Cebu, 20–40 fath. [44–73 m], and Palawan Is. ( NMSA: BO); Masbate Is. ( ISNB: Dautzenberg colln, ex Bulow). INDONESIA: Moluccas [ Maluku] ( ZMUC) .

REMARKS: The identity of the specimen figured by Kiener as P. undosa was queried by Deshayes (1843: 625), but its characters, although somewhat crudely drawn, do agree with that species. Not common in early collections (old shells usually pale brownish, striped with reddish brown, lilac tinge absent).

Pleurotoma raffrayi , judging by the type figure (dorsal view only), closely resembles T. undosa in sculpture of spire whorls, but the dorsum of the last whorl exhibits 8 or 9 similar-sized spiral cords, against 4–5 stronger, main ones with weaker ridges on the base.

The species illustrated by Wilson 1994 (194, pl. 38, fig. 15) as Turris undosa , is not that species, but shows greater resemblance to Turris clausifossata ,

Figures

PLATE 29. Turris undosa (Lamark, 1816): A—Syntype of Pleurotoma undosa, MHNG 1097/65, “Oc. indien”, 63.4 x 18.5 mm; B—Olango Is, Philippines, BO colln, 57.1 x 16.5 mm; C—Palawan Is, Philippines, BO colln, 64.3 x 20.4 mm,; D, E—Moluccas, 74.6 x 20.1 mm, NMSA; F – Moluccas, ZMUC, 74.7 x 21.7 mm.