tristis, Dicrolene Smith [H. M.] & Radcliffe [L.] in Radcliffe 1913:145, Pl. 8 (fig. 2) [Proceedings of the United States National Museum v. 44 (no. 1948); ref. 3579] Lagonoy Gulf, Luzon Island, Philippines, 13°35'27"N, 123°37'18"E, Albatross station 5467, depth 480 fathoms. Holotype: USNM 74131. Paratypes: BMNH 1939.4.1.4-5 [ex USNM] (2); USNM 99071 (1), 99243 (2), 99275-77 (1, 1, 1); ZMUC [ex USNM 99275] (1). •Valid as Dicrolene tristis Smith & Radcliffe 1913 -- (Machida in Masuda et al. 1984:100 [ref. 6441], Machida in Okamura & Kitajima 1984:257, 373 [ref. 8057], Nielsen & Cohen in Nielsen et al. 1999:62 [ref. 24448], Nielsen 1999:1980 [ref. 24753], Nakabo 2000:439 [ref. 25086], Nielsen in Randall & Lim 2000:596 [ref. 25122], Shinohara et al. 2001:307 [ref. 25995], Nakabo 2002:439 [ref. 26001], Shinohara et al. 2005:413 [ref. 28370], Fricke et al. 2014:32 [ref. 33932], Fricke et al. 2019:71 [ref. 36673], Misawa et al. 2020:274 [ref. 38138]). Current status: Valid as Dicrolene tristis Smith & Radcliffe 1913. Ophidiidae: Neobythitinae. Distribution: Western Pacific: Philippines north to Taiwan and Japan, south to Papua New Guinea. Habitat: marine.