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Figure 3 in Stolidobranch ascidians from the tropical western Indian Ocean

Figure 3. Symplegma zebra sp. nov. holotype: A. ventral side of a zooid. B, internal side of the gut. C, detail of a gonad. D, paratype: ventral side of a zooid. E, gonad of a specimen from the Maldive Islands. Scale bars = 0.5 mm.

Figure 32 in Stolidobranch ascidians from the tropical western Indian Ocean

Figure 32. Microcosmus madagascariensis: A, body ventrally opened. B,C, external view of the left and right sides. D, dorsal tubercle area. E, detail of hepatic papillae. Scale bars: A,B,C = 1 cm, D = 2 mm, E = 0.5 mm

Figure 14. A in Stolidobranch ascidians from the tropical western Indian Ocean

Figure 14. A, Polycarpa gradata sp. nov. holotype. B, Polycarpa plantei sp. nov. specimens from Madagascar. C, Polycarpa pori sp. nov. D, Pyura gangelion sp. nov.

Figure 19 in Stolidobranch ascidians from the tropical western Indian Ocean

Figure 19. Polycarpa pori sp. nov.: A, specimen from the Red Sea ventrally opened. B, specimen from Madagascar, endocarps on the left body side are not figured. Scale bars: A = 5 mm, B = 1 cm.

Figure 11 in Stolidobranch ascidians from the tropical western Indian Ocean

Figure 11. Polycarpa argentata: A,B, both sides of a specimen removed from the tunic. C, specimen ventrally opened. D, detail of a polycarp. Scale bars: A,B,C = 1 cm, D = 0.5 mm.

Figure 28 in Stolidobranch ascidians from the tropical western Indian Ocean

Figure 28. Pyura mozambica sp. nov.: A, body ventrally opened. B,C, both sides of the body, the tunic removed. D, part of a gonad. Scale bars: A,B,C = 5 mm, D = 1 mm.

Figure 27 in Stolidobranch ascidians from the tropical western Indian Ocean

Figure 27. Siphonal spinules: A, Pyura gangelion; B, Pyura scortea; C, Pyura tongae; D, Microcosmus madagascariensis; E, Microcosmus pupa. Scale bars: A,C,D,E = 100 mm, B = 20 mm.

Figure 23 in Stolidobranch ascidians from the tropical western Indian Ocean

Figure 23. Cnemidocarpa hemprichi: A,B external view of the left and right sides of the body. C, internal view of the left side. D, part of the dorsal lamina. E, dorsal tubercle. F, apex of a gonad showing the testis vesicles. Scale bars: A,B,C = 1 cm, D = 1 mm, E, F = 2 mm.

Figure 22 in Stolidobranch ascidians from the tropical western Indian Ocean

Figure 22. Cnemidocarpa concha sp. nov.: A, large specimen ventrally opened, all endocarps not figured. B, detail of the posterior part of the right side with gonads and endocarps. C, oesophagus entrance and postendostylar appendix. Scale bars = 1 cm.

Figure 26 in Stolidobranch ascidians from the tropical western Indian Ocean

Figure 26. Styela meteoris sp. nov.: A. specimen ventrally opened. B,C, external view of the left and right sides of the body. D, gonad. Scale bars: A,B,C = 3 mm, D = 2 mm.

Fig. 16 in A new species of pheasant shell from the south-western Indian Ocean (Mollusca: Gastropoda: Vetigastropoda: Phasianellidae: Tricolia)

Fig. 16. Scanning electron micrographs of the external surface of operculum of Tricolia retrolineata sp. n., showing distinct peripheral groove underlying labral margin, paratype, maximum diameter 2.9 mm, NMSA E2476/T2241.

Figs 14, 15 in A new species of pheasant shell from the south-western Indian Ocean (Mollusca: Gastropoda: Vetigastropoda: Phasianellidae: Tricolia)

Figs 14, 15. Apices of Tricolia elongata (Krauss, 1848) and T. retrolineata sp. n.: (14) T. elongata showing white, subsutural spots on second teleoconch whorl, NMSA W4769, Cape Agulhas, Western Cape; (15) T. retrolineata sp. n. lacking spots on apical region, NMSA L5938/T2238, Ponta do Ouro, Mozambique.

Fig. 13 in A new species of pheasant shell from the south-western Indian Ocean (Mollusca: Gastropoda: Vetigastropoda: Phasianellidae: Tricolia)

Fig. 13. Tricolia elongata (Krauss, 1848), length 12.7 mm, width 6.9 mm, NMSA W4769, Cape Agulhas, Western Cape.

Figs 1–12 in A new species of pheasant shell from the south-western Indian Ocean (Mollusca: Gastropoda: Vetigastropoda: Phasianellidae: Tricolia)

Figs 1–12. Tricolia retrolineata sp. n., variation in shell colour and pattern: (1, 2) holotype, length 6.5 mm, width 3.5 mm, NMSA L5938/T2238, Ponta do Ouro, Mozambique; (3–12) paratypes: (3, 4) length 5.8 mm, width 3.3 mm, NMSA S2851/T2242, between Bhanga Nek and Kosi Bay, KwaZulu-Natal; (5, 6) length 7.1 mm, width 3.8 mm, NMSA L7357/T3339, Ponta do Ouro, Mozambique; (7, 8) length 6.0 mm, width 3.4 mm, NMSA L6904/T2240, Malongane, Mozambique; (9, 10) length 6.5 mm, width 3.4 mm, NMSA W1935/T2243, Mzamba, Eastern Cape; (11, 12) length 7.4 mm, width 4.1 mm, NMSA E2476/T2241, Leadsman Shoal, KwaZulu- Natal.

Fig. 70 in A revision of the Chilodontidae (Gastropoda: Vetigastropoda: Seguenzioidea) of southern Africa and the south-western Indian Ocean

Fig. 70. Vaceuchelus species examined for comparison: (A, B) Euchelus cavernosus Sowerby, 1905, one of three syntypes, specimen marked with an X, Sri Lanka, length 7.2 mm, diameter 7.0 mm (NHMUK 1905.10.23.6–8); (C, D) Monodonta clathrata A. Adams, 1853, one of three syntypes, Bohol, Philippines, length 9.3 mm, diameter 7.8 mm (NHMUK 196868); (E–G) Euchelus favosus Melvill & Standen, 1896, figured syntype (here designated as lectotype) length 2.63 mm, diameter 2.60 mm (MMUM EE.3734, McGhie 2008). Not to scale, E–G enlarged relative to A–D.

Fig. 69 in A revision of the Chilodontidae (Gastropoda: Vetigastropoda: Seguenzioidea) of southern Africa and the south-western Indian Ocean

Fig. 69. Herpetopoma species examined for comparison: (A, B) Euchelus corrugatus Pease, 1861, lectotype (designated Kay 1965: 58), Sandwich Islands [Hawaii], length 3.8 mm, diameter 3.7 mm (NHMUK 1962821); (C, D) Euchelus fimbriatus Pease, 1861, holotype, Sandwich Islands [Hawaii], length 3.7 mm, diameter 3.6 mm (NHMUK 1962823); (E, F) Diloma verruca Gould, 1861, lectotype (designated Johnson 1964: 167), Coral Seas, China, length 3.2, diameter 2.7 mm (USNM 420).

Fig. 71 in A revision of the Chilodontidae (Gastropoda: Vetigastropoda: Seguenzioidea) of southern Africa and the south-western Indian Ocean

Fig. 71. Perrinia species examined for comparison: (A, B) Turcica chinensis Sowerby, 1888, syntype, China, length 23.7 mm, diameter 20.1 mm (NHMUK 1889.2.1.5) [one of two original specimens, the other in NMW 1955.158.00996]; Thalotia maculata Brazier, 1877, syntype, Darnley Is., Torres Strait, length 12.4 mm, diameter 10.2 mm (AMS–Macleay coll'n) (Ponder & Stanbury 1972); Calliostoma (Perrinia) squamocarinatum Schepman, 1908, syntype, Indonesia, length 6.1 mm, diameter 4.6 mm (ZMAN 3.08.084).

Fig. 68 in A revision of the Chilodontidae (Gastropoda: Vetigastropoda: Seguenzioidea) of southern Africa and the south-western Indian Ocean

Fig. 68. Ascetostoma and Herpetopoma species examined for comparison: (A, B) Euchelus ringens Schepman, 1908, holotype, Sulu Archipelago, Indonesia, length 7.8 mm, diameter 7.5 mm [not length 7.5 mm, diameter 8.0 mm as given by Schepman] (ZMAN 3.08.092); (C, D) Clanculus crassilabrum Sowerby, 1905, one of three syntypes, specimen marked with an X, Sri Lanka, length 7.0 mm, diameter 6.4 mm (NHMUK 1905.10.23.41–43); (E, F) Monodonta exasperata A. Adams, 1853, one of four syntypes, Sibonga Is. [Cebu], Philippines, length 6.0 mm, diameter 6.5 mm (NMHUK 196875).

Fig. 66 in A revision of the Chilodontidae (Gastropoda: Vetigastropoda: Seguenzioidea) of southern Africa and the south-western Indian Ocean

Fig. 66. Granata sulcifera (Lamarck, 1822): (A–C) Santa Carolina Is., Bazaruto Archipelago, Mozambique, maximum diameter 21.5 mm (NMSA J9645); (D, E) specimen with spotted colour pattern, Durban Bay, maximum diameter 18.8 mm (NMSA 5708); (F–H) lectotype of Stomatella articulata A. Adams, 1850, maximum diameter 19.0 mm (NHMUK 1968113).

Fig. 67 in A revision of the Chilodontidae (Gastropoda: Vetigastropoda: Seguenzioidea) of southern Africa and the south-western Indian Ocean

Fig. 67. Granata sulcifera (Lamarck, 1822): (A) scratch-like adult microsculpture, Inhaca Is., southern Mozambique, bar = 100 µm (NMSA L1437); (B) protoconch, Mtwalume, KZN, bar = 100 µm (NMSA B8666); (C, D) radula, Santa Carolina Is., central Mozambique, bars = 100 µm and 25 µm respectively (NMSA K3084).