REVIEW OF POLYIPNUS AND ARGYROPELECUS SCHULTZ 147 



(off Cape Cod, New Jersey, and Virginia; Grand B'anks; North 

 Sea; Gulf of Mexico; West Indies; off Soutli African coast), Indian 

 Ocean; Pacific (Philippine Islands). 



aculeatus Cuvier and Valenciennes, 1850 

 e'. Postabdominal spine about equal in length to anterior spine, the two 

 spines diverging at an angle of about 45° to 50° ; dorsal and ab- 

 dominal ridges smooth; no spines on ventral margin of caudal 

 peduncle. 

 f. Lower preopercular spine pointing downward, curved slightly for- 

 ward 'and outward, the upper very small or absent, its tip not 

 extending past rear margin of preopercle in adults; depth of 

 body about 1.5 times in standard length; height of dorsal blade 

 1 to 1.4 times in length of its base. Range: Pacific (Baja Cali- 

 fornia; off Panama), Atlantic (off New Jersey and off South 



Carolina), Indian Ocean olfersii (Cuvier, 1829) 



f. Lower preopercular spine straight, directed downward and often 

 a little curved outward but not forward, the upper of moderate 

 size, directed outward and backward, its tip extending past 

 re-ar margin of preopercular bone ; depth of body 1.3 to 1.7 times 

 in standard length; height of dorsal blade 1.7 to 2.3 times in 

 length of its base. Range: Pacific (off Panama; Philippines; off 

 southern Japan), North and South Atlantic, Antarctic, Indian 

 Ocean sladeni Regan, 1908 



ARGYROPELECUS GIGAS Norman, 1930 

 Argyropelecvs gigas Norman, Discovery Reiwrts, vol. 2. p. 302, fig. 10, 1930.— 

 "jespeksen, hi Joubin, Faune ichthyologique de I'Atlantique nord, no. 15, 

 1934.— Fowler, Bull. Amer. Mus. Nat. Hist., vol. 70, p. 1208, 1936.— Parr, 

 Bull Bingham Oceanogr. Coll., vol. 3, art. 7, p. 49, 1937. 

 ARGYROPELECUS AFFINIS Gaiman, 1899 



Argyropelecus hemigymnns (non Cocco) Wood-Mason and Alcock, Ann. Mag. 

 Nat. Hist., ser. 6, vol. 8, p. 126, 1891. 



Argyropelecus hemigymnus (non Cocco) Goode and Bean, Oceanic ichthyology, 

 pi. 39, fig. 147, 1895. 



Argyropelecus affinis Gauman, Mem. Mus. Comp. Zool., vol. 24, p. 237, 

 ■i899.._*Brauer, Sitz. Ges. Beford. Naturw. Marburg, 1901, p. 120, fig. 1.— 

 Brvuek, Tief see-Expedition . . . Valdivia, vol. 15, p. 103, pi. 7. figs. 1, 2, 

 1906.— REGAN, Trans. Linn. Soc. Zool., vol. 12, p. 218, 1908.— Murray and 

 Hjokt, The depths of the ocean, p. 612, pi. 2, 1912.— Jespersen, Report 

 on the Danish Oceanographical Expeditions, 1908-1910, vol. 2, A. 2, p. 6, 

 1915.— Barnard, Ann. South African Mus., vol. 21, p. 152, pi. 8, fig. 1, 

 1925 —Townsend and Nichols, Bull. Amer. Mus. Nat. Hist., vol. 52, p. 11, 

 1925.— Norman, Discovery Reports, vol. 2, p. 301, fig. 9, 1930.— Roule and 

 Angel, Rt^sult. Campagnes Sci. Prince de Monaco, fasc. 86, p. 46, 1933.--- 

 Jespersen. in Joubin, Faune ichthyologique de I'Atlantic nord, no. 15, 

 1934._Fowler, Bull. Amer. Mus. Nat. Hist., vol. 70, p. 246, fig. 115; p. 

 1208, 1936.— Parr, Bull. Bingham Oceanogr. Coll., vol. 3, art. 7, p. 49, 1937. 



Specimens in the National Museum as follows : 



U.S.N.M. no. 102776, length 39 mm. First Johnson-Smithsonian Deep-sea 

 Expedition, 1933, tin tag no. 186, station 33, latitude 18°24'15" N., longitude 

 67°17'50" W., to latitude 18°26'40" N., longitude 67°14' W., February 9, 1933, 

 180 to 360 fathoms. 



