halis, Nystactes Böhlke [J. E.] 1957:68, Pl. 4; Figs. 1A, 2-6 [Proceedings of the Academy of Natural Sciences of Philadelphia v. 109; ref. 598] About 1/4 miles north of the east end of Green Cay, Bahamas, 25°07'00"N, 77°11'15"W, depth about 35 feet. Holotype: ANSP 75156. Paratypes: ANSP 75157 (now 7, orig. 10), 75158 (1, stained), 75159-60 (1, 3), 75161 (1, stained), 75162 (1), 119074 [ex 75157] (1, missing); SMF 4775 [ex ANSP 75157] (1); CAS-SU 52107 [ex ANSP 75157] (1). Type catalog: Böhlke 1984:64 [ref. 13621]. If the e. and w. Atlantic populations are considered separate species, H. longissimus applies to the e. Atlantic form and H. halis to the w. Atlantic form. •Valid as Nystactichthys halis (Böhlke 1957) -- (Klausewitz 1971:31 [ref. 39504]). •Questionably a synonym of Taenioconger longissimus (Günther 1870) -- (Bauchot & Saldanha in Whitehead et al. 1986:572 [ref. 13676]). •Valid as Heteroconger halis (Böhlke 1957) -- (Robins & Ray 1986:59 [ref. 23100], Smith 1989:485 [ref. 13285], Smith 1989:737 [ref. 13285]). •Synonym of Heteroconger longissimus Günther 1870 -- (Tyler & Luckhurst 1994:90 [ref. 22552], González-Lorenzo et al. 1995:554 [ref. 22877], Smith-Vaniz et al. 1999:142 [ref. 25013], Schmitter-Soto et al. 2000:150 [ref. 27754], Smith 2002:834 [ref. 26549]). Current status: Synonym of Heteroconger longissimus Günther 1870. Congridae: Heterocongrinae. Distribution: Western Atlantic [if treated as valid]. Habitat: marine.