Annotated catalogue of the types of Triphoridae (Mollusca, Gastropoda) in the Natural History Museum of the United Kingdom, London Author Albano, Paolo G. https://orcid.org/0000-0001-9876-1024 Department of Palaeontology, University of Vienna, Althanstrasse 14, A- 1090 Vienna, Austria pgalbano@gmail.com Author Bakker, Piet A. J. https://orcid.org/0000-0003-4683-2083 Naturalis Biodiversity Center, Darwinweg 2, 2333 CR Leiden, The Netherlands Author Sabelli, Bruno Department of Biological, Geological and Environmental Sciences, University of Bologna, via Selmi 3, 40126 Bologna, Italy text Zoosystematics and Evolution 2019 2019-04-22 95 1 161 308 http://dx.doi.org/10.3897/zse.95.32803 journal article http://dx.doi.org/10.3897/zse.95.32803 1860-0743-1-161 0F66F482B7AB4A5CA61168EC01012D41 643B8504FF9AFFF3FF97FF9FFFF1FF82 2654003 Triphoris (Mastonia) monilifer Hinds, 1843 Figure 33 Triphoris (Mastonia) monilifer Hinds 1843b : 19, not illustrated. Illustration available in Hinds (1844) : 30, pl. 8, fig. 14. Type locality. Straits of Malacca. Type material. Syntypes : NHMUK 1879.2.26.208: 3 specimens , Straits of Malacca (coll. T. Lombe Taylor) ; NHMUK 1844.6.7.28-29, 2 specimens , Straits of Malacca (coll. E. Belcher) . Original description. Testa parva, elegantissime monili; anfractibus decem biseriatim granulosis; granulis seriei inferioris albis intervallis rubris, supremae albis; apertura subquadrata, sinu laterali angusto. Axis 2⅓ lin. Geog . Straits of Malacca; in 18 to 23 fathoms, mud. The manner in which the lower series of markings is repeated in the last whorl is very evident in this species, though to be met with in nearly the whole. Thus, the series of beading, which is single on the upper whorls, will here be found to be double on the last. Translation of the Latin text. Small shell, elegant like a jewel; ten whorls with two series of granules; the lower series with white granules with red interspaces, the upper one white; subquadrate aperture, narrow posterior sinus. Height 2⅓ lines. Diagnosis. Syntype NHMUK 1879.2.26.208/1 (Fig. 33A-G ) 4.4 mm high. Shell conical and rather broad. Teleoconch of nine whorls with two main spiral cords bearing tubercles at the intersection with prosocline axial ribs. A fine third cord develops on the last whorl and numerous fine punctuated spiral striae are present between the main cords. A fourth and fifth smooth spiral cords are visible on the base. The peristome bears a deep posterior sinus and additional spiral cords near the lip. Anterior siphonal canal short. Protoconch multispiral of 5 whorls. The first is apparently smooth, while the others bear a strong spiral keel and axial riblets. Protoconch brown. Teleoconch with a creamy white background and orange interspaces between tubercles. Figure 33. Triphoris monilifer Hinds, 1843, Straits of Malacca, coll. T. Lombe Taylor. A-G Syntype NHMUK 1879.2.26.208/1: front ( A, B ), side ( C, D ), back ( E ), protoconch ( F, G ). H-K Syntype NHMUK 1879.2.26.208/2: front ( H, I ), peristome ( J, K ). L Figure in Hinds 1844 . M-N Original labels of lot 1879.2.26.208. Scale bars: A-E, H-K : 0.5 mm ; F , G : 0.1 mm .