austrinus, Xenomystax Smith [D. G.] & Kanazawa [R. H.] in Smith 1989:560, Figs. 589-591 [Memoirs of the Sears Foundation of Marine Research Mem. 1 (part 9); ref. 13285] Caribbean Sea off Panama, 9°02'24"N, 76°31'30"W, Oregon station 4902, depth 400 fathoms. Holotype: USNM 198746. Paratypes: ANSP 109591 (1), 114856 (1), 114877 (1), 126444 (1), 131993 (1), 133011 (1); MCZ 39419 (1); USNM 193559 (1), 198680 (1), 198771 (1), 200319 (1), 201239 (3). Type catalog: Smith 1994:12-13 [ref. 21917]. •Valid as Xenomystax austrinus Smith & Kanazawa 1989 -- (Ben-Tuvia et al. 2001:1285 [ref. 41445], Ben-Tuvia et al. 2003:282 [ref. 41557], Smith 2003:750 [ref. 26989], Smith et al. 2017:42 [ref. 36260], Fricke et al. 2024:134 [ref. 41622]). Current status: Valid as Xenomystax austrinus Smith & Kanazawa 1989. Congridae: Congrinae. Distribution: Western Atlantic: southern Bahamas south to Guyana, including Caribbean Sea. IUCN (2019): Least Conern. Habitat: marine.