Circulus cycloma (Barnard, 1964) (new combination reference)
Cyclostrema (Tubiola) semisculptum E. von Martens, 1904 accepted as Zetela semisculpta (E. von Martens, 1904) (source of synonymy)
Gibbula whitechurchi W. H. Turton, 1932 accepted as Ilanga whitechurchi (W. H. Turton, 1932) (source of synonymy)
Ilanga D. G. Herbert, 1987 (original description)
Ilanga agulhasensis (Thiele, 1925) (new combination reference)
Ilanga bicarinata (A. Adams & Reeve, 1850) (new combination reference)
Ilanga biradiatula (E. von Martens, 1902) (new combination reference)
Ilanga discus D. G. Herbert, 1987 (original description)
Ilanga furtiva D. G. Herbert, 1987 (original description)
Ilanga gratiosa (Thiele, 1925) accepted as Ilanga bicarinata bicarinata (A. Adams & Reeve, 1850) (new combination reference)
Ilanga impolita D. G. Herbert, 1987 (original description)
Ilanga kilburni D. G. Herbert, 1987 (original description)
Ilanga laevissima (E. von Martens, 1881) (new combination reference)
Ilanga lirellata D. G. Herbert, 1987 (original description)
Ilanga maculicincta D. G. Herbert, 1987 (original description)
Ilanga millardi D. G. Herbert, 1987 accepted as Ilanga humillima (Thiele, 1925) (original description)
Ilanga platypeza D. G. Herbert, 1987 (original description)
Ilanga polita D. G. Herbert, 1987 (original description)
Ilanga rhyssomphala D. G. Herbert, 1987 (original description)
Ilanga undata (G. B. Sowerby II, 1870) accepted as Ilanga bicarinata bicarinata (A. Adams & Reeve, 1850) (new combination reference)
Ilanga undata sphinx D. G. Herbert, 1987 accepted as Ilanga bicarinata sphinx D. G. Herbert, 1987 (original description)
Ilanga undata undata (G. B. Sowerby II, 1870) accepted as Ilanga bicarinata bicarinata (A. Adams & Reeve, 1850) (status source)
Ilanga whitechurchi (W. H. Turton, 1932) (new combination reference)
Machaeroplax laevissima (E von Martens, 1881) accepted as Ilanga laevissima (E. von Martens, 1881) (source of synonymy)
Margarita bicarinata A. Adams & Reeve, 1850 accepted as Ilanga bicarinata (A. Adams & Reeve, 1850) (source of synonymy)
Minolia adarticulata Barnard, 1963 accepted as Spectamen adarticulatum (Barnard, 1963) (source of synonymy)
Minolia bicarinata (A. Adams & Reeve, 1850) accepted as Ilanga bicarinata (A. Adams & Reeve, 1850) (source of synonymy)
Minolia laevissima (E. von Martens, 1881) accepted as Ilanga laevissima (E. von Martens, 1881) (source of synonymy)
Minolia undata (G. B. Sowerby II, 1870) accepted as Ilanga bicarinata bicarinata (A. Adams & Reeve, 1850) (source of synonymy)
Monilea (Minolia) laevissima (E. von Martens, 1881) accepted as Ilanga laevissima (E. von Martens, 1881) (source of synonymy)
Solariella (Microgaza) meyeri Kilburn, 1973 accepted as Ilanga biradiatula (E. von Martens, 1902) (source of synonymy)
Solariella agulhasensis Thiele, 1925 accepted as Ilanga agulhasensis (Thiele, 1925) (source of synonymy)
Solariella biradiatula E. von Martens, 1902 accepted as Ilanga biradiatula (E. von Martens, 1902) (source of synonymy)
Solariella franciscana Barnard, 1963 accepted as Spectamen franciscanum (Barnard, 1963) (source of synonymy)
Solariella fuscomaculata G. B. Sowerby III, 1892 accepted as Skenea fuscomaculata (G. B. Sowerby III, 1892) (basis of record)
Solariella gratiosa Thiele, 1925 accepted as Ilanga bicarinata bicarinata (A. Adams & Reeve, 1850) (source of synonymy)
Solariella humillima Thiele, 1925 accepted as Ilanga humillima (Thiele, 1925) (basis of record)
Solariella multistriata Thiele, 1925 accepted as Spectamen multistriatum (Thiele, 1925) (source of synonymy)
Solariella nitens Thiele, 1925 accepted as Ilanga laevissima (E. von Martens, 1881) (source of synonymy)
Solariella pulchella W. H. Turton, 1932 accepted as Skenea fuscomaculata (G. B. Sowerby III, 1892) (source of synonymy)
Solariella rufanensis W. H. Turton, 1932 accepted as Skenea fuscomaculata (G. B. Sowerby III, 1892) (source of synonymy)
Solariella semisculpta (E. von Martens, 1904) accepted as Zetela semisculpta (E. von Martens, 1904) (source of synonymy)
Solariella turbynei Barnard, 1963 accepted as Zetela turbynei (Barnard, 1963) (source of synonymy)
Spectamen adarticulatum (Barnard, 1963) (new combination reference)
Spectamen flavum D. G. Herbert, 1987 (original description)
Spectamen franciscanum (Barnard, 1963) (basis of record)
Spectamen gerula D. G. Herbert, 1987 (original description)
Spectamen geruloides D. G. Herbert, 1987 (original description)
Spectamen multistriatum (Thiele, 1925) (new combination reference)
Spectamen pardalis D. G. Herbert, 1987 (original description)
Spectamen roseapicale D. G. Herbert, 1987 (original description)
Spectamen rubiolae D. G. Herbert, 1987 (original description)
Spectamen ruthae D. G. Herbert, 1987 (original description)
Spectamen semisculptum (E. von Martens, 1904) accepted as Zetela semisculpta (E. von Martens, 1904) (new combination reference)
Spectamen sulculiferum D. G. Herbert, 1987 (original description)
Spectamen turbynei (Barnard, 1963) accepted as Zetela turbynei (Barnard, 1963) (new combination reference)
Trochus laevissimus E. von Martens, 1881 accepted as Ilanga laevissima (E. von Martens, 1881) (source of synonymy)

South African part of the Indian Ocean for Ilanga undata sphinx D. G. Herbert, 1987