Family Carcharhinidae Carcharhinus plumbeus (Nardo, 1827) —No common name in Madeira; Sandbar Shark Lloris et al. 1991: 223 | Branstetter 1984a: 109 | Carneiro et al. 2014: 12. Distribution in Macaronesia. possibly Madeira archipelago, Azores (Arruda 1997), Canary Islands (Brito Hernández & Sancho Rafel 2003) and Cape Verde (Reiner 1996, 2005; Wirtz et al. 2013). Remarks. According to Ebert & Stehmann (2013) the occurrence of C. plumbeus in Madeira is possible. Since neither specimens nor other material in natural history museum collections were found, nor reliable observations were recorded, at this point, the presence of this species is considered as subject to confirmation. Galeocerdo cuvier (Péron & Lesuer, 1822) —Tubarão-tigre; Tiger shark Branstetter 1984a: 111 | Lloris et al. 1991: 228 | Carneiro et al. 2014: 12. Distribution in Macaronesia. possibly Madeira archipelago, Azores (Santos et al. 1997; Arruda 1997; Porteiro et al. 2010), Canary Islands (Brito et al. 2002; Brito Hernández & Sancho Rafel 2003) and Cape Verde (Reiner 1996, 2005; Monteiro et al. 2008; Wirtz et al. 2013) Remarks. no specimens or other material from Madeira were found in natural history museum collections. Carneiro et al. (2014) noted that Ebert & Stehmann (2013) indicated the presence of the species in Madeira based on its geographical distribution. Since the species has been reported from the remaining Macaronesian archipelagos and it has been collected in the Azores, the occurrence of the species in Madeiran waters is also expected, but at this point, the presence of this species is considered as subject to confirmation. Rhizoprionodon acutus (Rüppell, 1837) —Tubarão-bicudo, Milk shark Compagno 1973: 31 | Cadenat & Blache 1981: 244–247 | Compagno 1984b: 525–26 | Branstetter 1984a: 114 | Sanches 1986: 75 | Lloris et al. 1991: 237 | Wirtz et al. 2008: 3 | Carneiro et al. 2014: 12. Distribution in Macaronesia. possibly Madeira archipelago and Cape Verde (Reiner 1996, 2005; Menezes et al. 2004; Wirtz et al. 2013). Remarks. no specimens or other material from Madeira were found in natural history museum collections. Wirtz et al. (2008), considered this record from Madeira as very doubtful. Carneiro et al. (2014) state that R. acutus was indicated as native from Madeira by Compagno (1984b), but its presence was not confirmed. At this point, the presence of this species is considered as subject to confirmation.

Published as part of Biscoito, Manuel, Ribeiro, Cláudia & Freitas, Mafalda, 2018, Annotated checklist of the fishes of the archipelago of Madeira (NE Atlantic): I-Chondrichthyes, pp. 459-494 in Zootaxa 4429 (3) on pages 483-484, DOI: 10.11646/zootaxa.4429.3.2, http://zenodo.org/record/1285016