Fig. 4 in A revision of the Chilodontidae (Gastropoda: Vetigastropoda: Seguenzioidea) of southern Africa and the south-western Indian Ocean

Fig. 4. Operculum morphology in the Chilodontidae: (A) Littorina littorea (Linnaeus, 1758), Cancale, Brittany, France, max. diameter 10.2 mm (NMSA G778); (B) Euchelus asper (Gmelin, 1791), Bombay, India, max. diameter 9.0 mm (NMSA J8066); (C) Granata sulcifera, Mtwalume, KZN, max. diameter 3.58 mm (NMSA V3927); (D) Clypeostoma salpinx, off Whale Rock, Eastern Cape, max. diameter 2.59 mm (NMSA C9502); (E) Danilia textilis, max. diameter 2.97 mm (holotype, NMSA E7756/ T2595); (F) Ascetostoma providentiae, off Boteler Point, KZN, max. diameter 2.52 mm (NMSA S4904); (G) Herpetopoma (s.s.) instrictum, Low Isles, Great Barrier Reef, Queensland, max. diameter 3.17 mm (AMS C.304699); (H) H. (s.s.) scabriusculum, Bradleys Head, Sydney Harbour, Australia, max. diameter 1.78 mm (AMS C.30695); (I) H. (s.l.) helix, off Umzinto, KZN, max. diameter 1.01 mm (NMSA D5427); (J) Vaceuchelus cretaceus, SE of Kosi Bay, KZN, max. diameter 2.52 mm (paratype, NMSA S4006/T2638); (K) V. natalensis, off Umzinto, KZN, max. diameter 0.99 mm (NMSA D5428); (L) V. semilugubris, Réunion, max. diameter 1.28 mm (M. Jay coll'n MNHN); (M) Perrinia angulifera, off Boteler Point, KZN, max. diameter 4.44 mm (NMSA D9209); (N) P. konos, off Port Grosvenor, Eastern Cape, max. diameter 1.23 mm (NMSA E177); (O) P. stellata, Kosi Bay main coral reef, KZN, max. diameter 1.14 mm (NMSA S1985).