polygonius, Acanthostracion Poey [F.] 1876:217 [175] [Anales de la Sociedad Española de Historia Natural, Madrid v. 5 (for 5 Apr. 1876); ref. 3510] Cuba. No types known. On p. 175 of separate. Acanthostracion is neuter, therefore the species epithet should be polygonium. •Valid as Lactophrys polygonia (Poey 1876) -- (Robins & Ray 1986:304 [ref. 23100], Cervigón 1992:377 [ref. 23827], Cervigón 1996:109 [ref. 24489]). •Valid as Acanthostracion polygonia Poey 1876 -- (Nelson et al. 2004:184 [ref. 27807]). •Valid as Acanthostracion polygonius Poey 1876 -- (Tyler 1965:5 [ref. 39939], Tyler 1965:263 [ref. 39940], Díaz de Astarloa & Fugueroa 1995:466 [ref. 22174] as poligonius, Aguilera 1998:53 [ref. 24221], Smith-Vaniz et al. 1999:352 [ref. 25013], Schmitter-Soto et al. 2000:170 [ref. 27754], Rocha & Rosa 2001:992 [ref. 25909], Collette et al. 2003:127 [ref. 26784], Matsuura 2003:1983 [ref. 27119], Menezes & Figueiredo in Menezes et al. 2003:109 [ref. 27192], Smith et al. 2003:70 [ref. 27621], McEachran & Fechhelm 2005:914 [ref. 28815], Page et al. 2013:190 [ref. 32708], Smith-Vaniz & Jelks 2014:87 [ref. 33341], Matsuura 2014:17 [ref. 33576], Pinheiro et al. 2015:35 [ref. 34324], Nión et al. 2016:56 [ref. 35565] as Acanthostracyon poligonius, Robertson et al. 2020:160 [ref. 38098], Escobar-Sierra et al. 2021:78 [ref. 38844], Rotundo et al. in Marceniuk et al. 2021:687 [ref. 38945], Bennema & van Moorsel 2022:73 [ref. 39585], Carvalho-Filho 2023:281 [ref. 40480], Hoff et al. 2023:7 [ref. 40463]). •Valid as Acanthostracion polygonium Poey 1876 -- (Page et al. 2023:169 [ref. 40505]). Current status: Valid as Acanthostracion polygonium Poey 1876. Ostraciidae. Distribution: Western Atlantic: New Jersey (U.S.A.) and Bermuda south to Santa Catarina (Brazil), including Gulf of Mexico and Caribbean Sea. Habitat: marine.