quadriscutis, Arius Valenciennes [A.] in Cuvier & Valenciennes 1840:111 [Histoire naturelle des poissons v. 15; ref. 1008] Suriname. Syntypes: MNHN A-9402 (1), B-0596 (1), B-0613 (1); RMNH 3049 (1), 3050 (1). Type catalog: Bertin & Estève 1950:11-12 [ref. 19575], Ferraris 2007:37 [ref. 29155]. For information on types and locality see Boeseman 1972:295 [ref. 19698]. •Valid as Arius quadriscutis Valenciennes 1840 -- (Shimizu in Uyeno et al. 1983:158 [ref. 14275], Burgess 1989:169 [ref. 12860], Cervigón 1991:139 [ref. 24472], Cervigón 1992:259 [ref. 23827], Le Bail et al. 2000:26 [ref. 24549], Camargo & Isaac 2001:145 [ref. 27639], Acero P. 2003:845 [ref. 26998]). •Synonym of Aspistor parkeri (Traill 1832) -- (Marceniuk 2005:96 [ref. 28718], Marceniuk & Menezes 2007:24 [ref. 29031]). •Valid as Aspistor quadriscutis (Valenciennes 1840) -- (Marceniuk & Ferraris in Reis et al. 2003:448 [ref. 27061], Marceniuk & Menezes in Menezes et al. 2003:42 [ref. 27192], Kailola 2004:128 [ref. 28108], Ferraris 2007:37 [ref. 29155], Marceniuk & Birindelli 2010:61 [ref. 30960], Marceniuk et al. 2012:639 [ref. 32225], Marceniuk et al. 2017:38 [ref. 35324], Marceniuk in Marceniuk et al. 2021:164 [ref. 38945], Vieira et al. 2023:20 [ref. 40759]). •Valid as Notarius quadriscutis (Valenciennes 1840) -- (Betancur-R. et al. 2007:349 [ref. 29268], Marceniuk et al. 2023:15 [ref. 40422], Lutz et al. 2024:8 [ref. 41548]). Current status: Valid as Notarius quadriscutis (Valenciennes 1840). Ariidae: Ariinae. Distribution: Southwestern Atlantic: Atlantic coastal rivers from Guyana to northeastern Brazil (Brazil, French Guiana, Guyana and Suriname). Habitat: brackish, marine.