punctatus, Cotylopus Regan [C. T.] 1905:362 [Annals and Magazine of Natural History (Series 7) v. 16 (no. 93) (art. 41); ref. 18456] Tequixistlan, Oaxaca, Mexico. Holotype (unique): BMNH 1906.6.1.421. Subjectively invalid; secondarily preoccupied in Sicydium by Sicydium punctatum Perugia 1896, replaced by Sicydium multipunctatum Regan 1906. •Synonym of Sicydium multipunctatum Regan 1906 -- (Castro-Aguirre et al. 1999:427 [ref. 24550], Kullander in Reis et al. 2003:662 [ref. 27061]). •Synonym of Sicydium salvini Ogilvie-Grant 1884. 2°Homonym. Current status: Synonym of Sicydium salvini Ogilvie-Grant 1884. Oxudercidae: Sicydiinae. Habitat: freshwater, brackish, marine.