Leucosyrinx eurina (E.A. Smith, 1899 ), 2025

Kantor, Yuri I., Fedosov, Alexander & Puillandre, Nicolas, 2025, Revision of the Indo-Pacific species of the genus Leucosyrinx Dall, 1889 (Neogastropoda: Conoidea: Pseudomelatomidae), European Journal of Taxonomy 999, pp. 1-126 : 95-96

Leucosyrinx eurina (E.A. Smith, 1899) comb. nov.

Fig. 32E

Pleurotoma (Surcula) eurina E.A. Smith, 1899: 239 .

Pleurotoma (Surcula) eurina – Annandale & Stewart 1909: pl. 9 figs 4, 4a.

Comitas eurina – Powell 1969: 268 (23-280), pl. 217 figs 4–5. — Tan & Islami 2021: 325, fig. 9b.

Type material

Holotype

INDIAN OCEAN • Travancore coast; depth 430 ftm (= 790 m); Investigator , stn 232; ZSI, M 647 /1.

Paratype

INDIAN OCEAN • 1 spec.; same data as for holotype; NHMUK 1904.6 .15.139 .

Remarks

The shell of L. eurina is unusual for the genus due to the distinct subsutural spiral fold, a feature somewhat similar to what is observed in our sequenced specimen of L. thisbe ( Fig. 17C–E ). On the other hand, the anal sinus is subsutural and occupies entire subsutural ramp, thus suggesting the transfer of the species from Comitas to Leucosyrinx .

Distribution

From off southern India to Indonesia, 790– 940 m.

Figures

Fig. 32. Types of species of Leucosyrinx Dall, 1889 known only from empty shells. A. L. aequatorialis Thiele, 1925, holotype, SL 13 mm (from Thiele 1925). B. L. anteridion (Watson, 1881) comb. nov., holotype, SL 22.1 mm (images by Aimee McArdle, NHMUK Photographic Unit). C. L. arcana (E.A. Smith, 1899) comb. nov., syntype, ZSI, M 926/1, SL 25.0 mm (from Annandale & Stewart 1909: pl. 9 fig. 6–6a). D. L. curviplicata (Sysoev, 1996) comb nov., holotype NHMUK 1993092, SL 32. 4 mm (images by Aimee McArdle, NHMUK Photographic Unit). E. L. eurina (E.A. Smith, 1899) comb. nov., paratype NHMUK 1904-6-15-139, SL 39 mm (photo courtesy of NHMUK). F. L. halicyria (Melvill, 1904) comb. nov., holotype, NHMUK 1905-7-14-49, SL 32.0 mm. G. L. julia Thiele, 1925, syntype, ZMB Mol 109379, SL 10.6 mm (photo courtesy of Museum für Naturkunde). H. L. pagodaeformis (Schepman, 1913) comb. nov, figured syntype, NATURALIS, ZMA.MOLL.137728, SL 28.7 mm (photo courtesy of K. Hasegawa). Shells not to scale.

Fig. 17. A–E. Leucosyrinx thisbe (E.A. Smith, 1906). A–B. Holotype, ZSI, M 1233/1, SL 44 m (from the site of ZSI, https://zsicollections.in/specimen/ZSI0000003967). C–E. MNHN-IM-2009-16821, Solomon Is., 1230–1306 m, SL 75.1 mm. F–H. Leucosyrinx sp. 13, MNHN-IM-2009-13552, northern New Caledonia, 600–1100 m, SL 39.6 mm. I–J. Leucosyrinx melvilli (Schepman, 1913), syntype, NATURALIS, ZMA.MOLL.137982, SL 62 mm (photo courtesy of NATURALIS). All shells at the same scale.