williamsi, Ungusurculus Schwarzhans [W.] & Møller [P. R.] 2007:97, Figs. .50-51 [The Beagle, Records of the Museums and Art Galleries of the Northern Territory v. 23; ref. 29457] Pulang Duta, Guimares Island, 10°34'NE, 122°30'E, Philippines, depth 0-4 meters. Holotype: USNM 346941. Paratypes: USNM 384197 (10), ZMUC P771627-28 (2). •Valid as Ungusurculus williamsi Schwarzhans & Møller 2007 -- (Allen & Erdmann 2012:139 [ref. 31980], Møller et al. 2016:Appendix B [ref. 34432] in Dinematichthyidae, Allen & Erdmann 2024:152 [ref. 40796]). Current status: Valid as Ungusurculus williamsi Schwarzhans & Møller 2007. Dinematichthyidae. Distribution: Western Pacific: Guimares Island (Philippines). Habitat: marine.