unispinus, Polyipnus Schultz [L. P.] 1938:137, Fig. 43 [Proceedings of the United States National Museum v. 86 (no. 3047); ref. 10126] Philippines, 13°22'22"N, 124°00'48"E, Albatross station 5451, depth 380 fathoms. Holotype: USNM 103153 [or 103353]. Paratypes: USNM 103029 (5). •Valid as Polyipnus unispinus Schultz 1938 -- (Paulin et al. 1989:96 [ref. 24556], Harold 1994:502 [ref. 21941], Harold 1999:1902 [ref. 24741], Harold et al. 2015:465 [ref. 34249], Fricke et al. 2019:61 [ref. 36673]). Current status: Valid as Polyipnus unispinus Schultz 1938. Sternoptychidae: Sternoptychinae. Distribution: Western Pacific: Indonesia east to Solomon Islands, south to northern New Zealand. Habitat: marine.