Figure 2 in Redescription of Retilaskeya horrida (di Monterosato, 1874) comb. nov. and a re-evaluation of the taxonomic affinity of the genus Retilaskeya (Caenogastropoda: Triphoroidea)

Figure 2. Cerithiopsis horrida di Monterosato, 1874 ex Jeffreys ms. – specimens not to scale. (a) Live animal (after Mifsud 2003). (b–c) Radula of the specimen figured in 2a: whole view and lateral and marginal teeth. Scale bars 10 µm. (d–g) Protoconch: optical and SEM lateral view. (d) Optical view of the protoconch. (e) SEM magnification of protoconch I. (f–g) Arrowheads indicating protoconch I–II and protoconch II–teleoconch transitions, respectively. Scale bars 200 µm. (h–i) Teleoconch: apertural view of the last whorl and basal view. (j) Operculum, 670 µm × 485 µm (height × width). (k–m) Cerithiopsis horrida Jeffreys, 1885 presumptive syntypes (courtesy of NHMUK) – specimens not to scale. Apertural and abapertural views. (k) NHMUK 1885.11.5.3910, total height: 8.39 mm. (l) NHMUK 1885.11.5.3932, total height: 4.16 mm. (m) NHMUK 1885.11.5.3933, total height: 3.37 mm.