Arca plicata Chemnitz, 1795 accepted as Acar plicata (Dillwyn, 1817) (basis of record)
Atactodea glabrata (Gmelin, 1791) accepted as Atactodea striata (Gmelin, 1791) (basis of record)
Barbatia decussata (G. B. Sowerby I, 1833) (basis of record)
Brachidontes variabilis (Krauss, 1848) (basis of record)
Drupa margariticola (Broderip, 1833) accepted as Drupella margariticola (Broderip, 1833) (basis of record)
Fossarus lamellosus (Montrouzier, 1861) (basis of record)
Lithophaga malaccana (Reeve, 1857) accepted as Leiosolenus malaccanus (Reeve, 1857) (basis of record)
Mitra (Strigatella) paupercula (Linnaeus, 1758) accepted as Strigatella paupercula (Linnaeus, 1758) (additional source)
Mitra litterata Lamarck, 1811 accepted as Strigatella litterata (Lamarck, 1811) (basis of record)
Nerita debilis Dufo, 1840 accepted as Mienerita debilis (Dufo, 1840) (basis of record)
Ostrea numisma Lamarck, 1819 accepted as Hyotissa numisma (Lamarck, 1819) (basis of record)

Aldabra for Acanthopleura brevispinosa (G. B. Sowerby II, 1840) 
Aldabra for Acar plicata (Dillwyn, 1817) 
Aldabra for Arcopsis symmetrica (Reeve, 1844) 
Aldabra for Atactodea glabrata (Gmelin, 1791) 
Aldabra for Barbatia decussata (G. B. Sowerby I, 1833) 
Aldabra for Brachidontes variabilis (Krauss, 1848) 
Aldabra for Cardita variegata Bruguière, 1792 
Aldabra for Crassostrea cucullata (Born, 1778) 
Aldabra for Cypraecassis rufa (Linnaeus, 1758) 
Aldabra for Drupa lobata (Blainville, 1832) 
Aldabra for Drupa margariticola (Broderip, 1833) 
Aldabra for Drupa marginatra (Blainville, 1832) 
Aldabra for Drupa ricina (Linnaeus, 1758) 
Aldabra for Fossarus lamellosus (Montrouzier, 1861) 
Aldabra for Isognomon dentifer (Krauss, 1848) 
Aldabra for Isognomon legumen (Gmelin, 1791) 
Aldabra for Isognomon perna (Linnaeus, 1767) 
Aldabra for Lasaea rubra (Montagu, 1803) 
Aldabra for Lithophaga malaccana (Reeve, 1857) 
Aldabra for Lithophaga nasuta (R. A. Philippi, 1846) 
Aldabra for Littorina glabrata R. A. Philippi, 1846 
Aldabra for Modiolus auriculatus Krauss, 1848 
Aldabra for Nerita debilis Dufo, 1840 
Aldabra for Ostrea numisma Lamarck, 1819 
Aldabra for Septifer bilocularis (Linnaeus, 1758) 
Aldabra for Siphonaria madagascarensis Odhner, 1919 
Aldabra for Strigatella paupercula (Linnaeus, 1758) 

English castor-bean shell [from synonym] for Drupa ricina (Linnaeus, 1758)
English smooth beach clam [from synonym] for Atactodea glabrata (Gmelin, 1791)
English thorny chiton [from synonym] for Acanthopleura brevispinosa (G. B. Sowerby II, 1840)
English variable mussel for Brachidontes variabilis (Krauss, 1848)
English white-lipped castor bean [from synonym] for Drupa ricina (Linnaeus, 1758)

 Description

 for Drupa ricina (Linnaeus, 1758)

Similar to above with pronounced spines along outer lip, up to 3 cm. Colour dirty white with dark brown or black ... [details]

 Habitat

 for Strigatella paupercula (Linnaeus, 1758)

rocky shores [details]

 synonymy

 for Acar plicata (Dillwyn, 1817)

Basee on subgenus; correct genus could well be Barbatia: Acar is listed as subgenus of Barbatia in Vaught [details]