ritteri, Xeneretmus Gilbert [C. H.] 1915:350, Pl. 17 (fig. 10 [not 11]) [Proceedings of the United States National Museum v. 48 (no. 2075); ref. 1632] Off San Diego, California, U.S.A., Albatross station 4366, depth 176-181 fathoms. Holotype: USNM 75814. Paratypes: CAS-SU 22303 (4), 22980 (1). •Valid as Xeneretmus ritteri Gilbert 1915 -- (Eschmeyer & Herald 1983:190 [ref. 9277], Kanayama 1991:83 [ref. 19261] with genus as Xenertmus, Sheiko 1993:87 [ref. 21227], Sheiko & Mecklenburg 2004:6 [ref. 27591], Love et al. 2005:99 [ref. 37547], Sheiko & Fedorov 2010:22 [ref. 38118], Page et al. 2013:126 [ref. 32708], Love et al. 2021:132 [ref. 39279]). Current status: Valid as Xeneretmus ritteri Gilbert 1915. Agonidae: Bathyagoninae. Distribution: Northeastern Pacific: southern California (U.S.A.) south to Pacific coast of central Baja California (Mexico); northern Gulf of California (Mexico). Habitat: marine.