billitonensis, Mastacembelus de Beaufort [L. F.] 1939:194 [Treubia, Buitenzorg v. 17 (pt 3); ref. 17180] Belitung Island, Indonesia. Syntypes: ZMA 111583 (3). Additional material: (3) Sumatra [not "typical locality"]. Type catalog: Nijssen et al. 1982:105 [ref. 19236]. •Synonym of Mastacembelus maculatus Cuvier 1832 -- (Roberts 1989:181 [ref. 6439]). •Synonym of Macrognathus maculatus (Cuvier 1832) -- (Kottelat 2013:312 [ref. 32989]). Current status: Synonym of Macrognathus maculatus (Cuvier 1832). Mastacembelidae. Habitat: freshwater.