Oliveragemmula speciosa, common name the splendid turrid, is a species of sea snail, a marine gastropod mollusk in the family Turridae, the turrids.
Description The length of the shell varies between 40 mm and 80 mm.
The shell is crenulately carinate or ribbed. The principal keel, forming the angle of the whorls, is broad and corded, with a sloping shoulder above it and studded with raised granules. The shell is yellowish white, the ribs ochraceous. The peripheral keel and the primary spiral cords show light-brown continuous lines. G.W. Tryon (1884) Manual of Conchology, structural and systematic, with illustrations of the species, vol. VI; Philadelphia, Academy of Natural Sciences
Distribution This marine species occurs in the Indo-West Pacific; in the South China Sea, Nansha Islands; Arabian Sea, Japan, the Philippines; off Papua New Guinea.
References
Powell, A.W.B. (1964) The family Turridae in the Indo-Pacific. Part 1. The subfamily Turrinae. Indo-Pacific Mollusca, 1, 227–346. Liu, J.Y. [Ruiyu] (ed.). (2008). Checklist of marine biota of China seas. China Science Press. 1267 pp. Li B. [Baoquan] & Li X. [Xinzheng]. (2008). Report on the turrid genera Gemmula, Lophiotoma and Ptychosyrinx (Gastropoda: Turridae: Turrinae) from the China seas. Zootaxa. 1778: 1-25. Kantor, Y., Bouchet, P., Fedosov, A., Puillandre, N. & Zaharias, P. (2024). Generic revision of the Recent Turridae (Neogastropoda: Conoidea). Journal of Molluscan Studies. eyae032: 1-40.
External links Reeve. "On new species of Pleurotoma, Clavatula, and Mangelia." ; Proceedings of the Zoological Society of London pt. 9-11 (1841-1843) Melvill J.C., 1917. A revision of the Turridae (Pleurotomidae) occurring in the Persian Gulf, Gulf of Oman and north Arabian Sea as evidenced mostly through the results of dredgings carried out by Mr F. W. Townsend, 1893~1914. Proc. Malac. Soc. Lond. 12: 140-201, pls. 8-10 Gastropods.com: Gemmula (Gemmula - speciosa group) speciosa Tucker, J.K. 2004 Catalog of recent and fossil turrids (Mollusca: Gastropoda). Zootaxa 682:1-1295.