orthogoniata, Homaloptera Vaillant [L. L.] 1902:122, Figs. 33-35 [Notes from the Leyden Museum v. 24 (note 1); ref. 4490] Bloeoe [= Blu] River, Mahakam basin, Borneo. Lectotype: RMNH 7790. Paralectotypes: RMNH 7791 (1), 36370 (5). Lectotype appeared in Tan & Ng 2005:3-4, not designated here. •See Rainboth 1996:125 [ref. 22772]. •Valid as Homaloptera orthogoniata Vaillant 1902 -- (Roberts 1989:89 [ref. 6439], Lim et al. 1990:43 [ref. 16753], Kottelat et al. 1993:53 [ref. 23448], Kottelat & Lim 1996:236 [ref. 23210], Doi 1997:18 [ref. 22832], Kottelat 1998:270 [ref. 23656], Ng & Tan 1999:356 [ref. 24159], Kottelat 2000:53 [ref. 25040], Tan & Ng 2005:2 [ref. 28206], Kottelat & Widjanarti 2005:156 [ref. 28284], Parenti & Lim 2005:188 [ref. 28285], Kottelat 2012:50 [ref. 32367], Kottelat 2013:188 [ref. 32989], Randall & Page 2015:63 [ref. 33701]). Current status: Valid as Homaloptera orthogoniata Vaillant 1902. Balitoridae. Distribution: Borneo, Indonesia. Habitat: freshwater.