Nomenclator, geographic and stratigraphic distribution of the family Triphoridae (Mollusca: Gastropoda) Author Bakker, Piet A. J. 0000-0003-4683-2083 Naturalis Biodiversity Center, Darwinweg 2, 2333 CR Leiden, The Netherlands. hannco.bakker@naturalis.nl Author Albano, Paolo G. 0000-0003-4683-2083 Stazione Zoologica Anton Dohrn, Villa Comunale, Naples, Italy. hannco.bakker@naturalis.nl text Zootaxa 2022 2022-01-11 5088 1 1 216 journal article 10.11646/zootaxa.5088.1.1 1175-5326 5836536 904D8C6D-A0C0-4D5A-960F-AEBACE141DF0 Cerithiopsis convexa Carpenter, 1857 Cerithiopsis convexa Carpenter, 1857: 444 , no. 561. Metaxia convexa ( Carpenter, 1857 ) Hertlein & Strong 1955: 136 . Type locality. Mexico , Mazatlan . Type material. Type material not located so far. Distribution. Ecuador ( Skoglund 1992 ), Ecuador , Galapagos Islands ( Hertlein & Strong 1955 ; Skoglund 1992 ; Kaiser 1993 ; Kaiser 1997 ), Mexico ( Carpenter 1857 ), Panama ( Skoglund 1992 ), United States , California ( McLean 1969 ; Skoglund 1992 ). Remarks. Skoglund (1992) considered Metaxia diadema Bartsch, 1907 a junior synonym.