pentacanthus, Xenochirus Gilbert [C. H.] 1890:91 [Proceedings of the United States National Museum v. 13 (no. 797); ref. 1623] Coast of Washington, U.S.A., Albatross station 3076, 47°46'00"N, 125°10'00"W, depth 178 fathoms. Syntypes: BMNH 1900.9.29.213 (1); CAS-SU 250 (5); MCZ 27852 [ex USNM 46609] (1); USNM 43090 (1), 46609 (4). Type catalog: Böhlke 1953:134 [ref. 12291]. •Valid as Asterotheca pentacantha (Gilbert 1890) -- Gilbert 1915: 344 [ref. 1632]. •Valid as Bathyagonus pentacanthus (Gilbert 1890) -- (Eschmeyer & Herald 1983:187 [ref. 9277], McAllister 1990:205 [ref. 14674], Kanayama 1991:74 [ref. 19261], Sheiko 1993:73 [ref. 21227], Busby 1998:40 [ref. 25508], Imamura & Kitagawa 1999:108 [ref. 24208], Mecklenburg et al. 2002:546 [ref. 25968], Sheiko & Mecklenburg 2004:5 [ref. 27591], Nelson et al. 2004:122 [ref. 27807], Love et al. 2005:96 [ref. 37547], Sheiko & Fedorov 2010:21 [ref. 38118], Maslenikov et al. 2013:13 [ref. 37947], Page et al. 2013:126 [ref. 32708], Pietsch & Orr 2015:48 [ref. 34694], Kells et al. 2016:200 [ref. 35888], Burton & Lea 2019:69 [ref. 37205], Love et al. 2021:128 [ref. 39279], Page et al. 2023:188 [ref. 40505]). Current status: Valid as Bathyagonus pentacanthus (Gilbert 1890). Agonidae: Bathyagoninae. Distribution: Northeastern Pacific: western Aleutians and Gulf of Alaska south to southern California (U.S.A.). Habitat: marine.