sulcatus, Callichthys Kner [R.] 1855:110 [Sitzungsberichte der Kaiserlichen Akademie der Wissenschaften. Mathematisch-Naturwissenschaftliche Classe v. 17; ref. 2629] Marabitanos, Rio Branco, Brazil. Lectotype: NMW 47755 [as 4775 on p. 312]. Paralectotypes: NMW 47748 (1), 47756 (1), 47760 (1), 47767 (2), 47771 (1). Type catalog: Ferraris 2007:129 [ref. 29155]. Appeared first as name only in Kner 1854:141 [separate p. 6] [ref. 18262]. Lectotype selected by Reis 1997:311, 313 [ref. 22747]. •Synonym of Megalechis thoracata (Valenciennes 1840) -- (Reis 1997:310 [ref. 22747], Reis in Reis et al. 2003:305 [ref. 27061]). •Synonym of Megalechis picta (Müller & Troschel 1849) -- (Reis et al. 2005:680 [ref. 28320], Ferraris 2007:129 [ref. 29155]). Current status: Synonym of Megalechis picta (Müller & Troschel 1849). Callichthyidae: Callichthyinae. Habitat: freshwater.