EEVIEW OF POLYIPNUS AND ARGYKOPELECUS — SCHULTZ 153 



Argyropelecus lynclius Gaeman, Mem. Mus. Comp. ZooL, vol. 24, p. 234, pi. J, 

 figs. 1, lb, 1899. — Bexanske, in Vauderbilt, To Galapagos on the Ara 1926, 

 Appendix C, p. 132, pi. 5, 1927. 



Argyropelecus lichnus Townsend and Nichols, Bull. Amer. Mus. Nat. Hist., vol. 

 52, p. 11, 1925. 



The following specimens examined: 



U.S.N.M. no. 35534, 1 specimen, 39 mm, Albatross station 2208, latitude 

 Sg^SS'OO" N., longitude 71°16'15" W., August 21, 1884. 



U.S.N.M. no. 38211, 1 specimen, 53 mm, Albatross station 2728, latitude 

 SG-SO'OO" N., longitude 74°33'00" W., October 25, 1886. 



The recent work by Parr (1937) indicates that olfersii, lynchus^ 

 and sladeni each may be distinct species. I have examined many 

 specimens of this general form and have concluded that because of 

 much variation in bodily proportions most of the differences indi- 

 cated by Dr. Parr do not hold good. Therefore since lynchus ap- 

 pears to have a higher dorsal blade and the upper preopercular spine 

 is shorter, it is tentatively placed in the synonymy of olfersii. 



ARGYKOPELECUS SLADENI Regan, 1908 



Argyropelecus sladeni Regan, Trans, Linn. Soe. Zool., vol. 12, p. 218, 1908. — 

 NoBMAN, Discovery Reports, vol. 2, p. 304, fig. 13, 1930. — Jespeesen, in 

 Joubin, Faune ichthyologique de I'Atlantique nord, no. 15, 1934. — Fowleb, 

 Bull. Amer. Mus. Nat. Hist. vol. 70, p. 1207, 1936.— Paeb, Bull. Bingham. 

 Oceanogr. Coll., vol. 3, art. 7, pp. 46, 47, 50, figs. 18 (4), 19, 1937. 



The following 50 specimens examined, all from Albatross stations: 



U.S.N.M. no. 57885, 2 specimens, 26 and 46 mm, station 3360, latitude 6°17' N., 

 longitude 82°05' W., 1672 fathoms, February 24, 1891, or station 3395, latitude 

 7''30'36" N, longitude 78°39' W., 730 fathoms, March 11, 1891. 



U.S.N.M. no. 102787, 1 specimen, 39 mm, station 4913, northwest Pacific, 

 latitude 31''39'10" N., longitude 129°22'30" E., 391 fathoms, August 12, 1906. 



U.S.N.M. no. 103013, 2 specimens, one 11 mm, other larva, station 5120, 

 latitude 13°45'30" N., longitude 120''30'15" E., depth 393 fathoms, January 21, 

 1908. 



U.S.N.M. no. 103014, 1 specimen in poor condition, station 5185, latitude 

 10''5'45" N., longitude 122°18'30" E., 638 fathoms, March 30, 1908. 



U.S.N.M. no. 103015, 2 specimens, 27 and 34 mm, station 5368, latitude 

 13°35'30" N., longitude 121°48' E., 181 fathoms, February 23, 1909. 



U.S.N.M. no. 103016, 1 specimen, 27 mm, station 5387, latitude 12°54'40" N., 

 longitude 123°20'30" E., 209 fathoms, March 11, 1909. 



U.S.N.M. no. 103017, 1 specimen in bad condition, station 5447, latitude 

 13°28' N., longitude 123M6'18" E., 310 fathoms, June 4, 1909. 



U.S.N.M. no. 103018, 4 specimens, 14 to 19 mm, station 5497, latitude 9°7'15" N., 

 longitude 124°59'30" E., 960 fathoms, August 3, 1909. 



U.S.N.M. no. 103019, 34 specimens, 7 to 19 mm, station 5500, latitude 8°37'45" 

 N., longitude 124°36'45" E., 267 fathoms, August 4, 1909. 



U.S.N.M. no. 103020, 1 specimen, 35 mm, station 5525, latitude 9°12'30" N., 

 longitude 123°44'7" E., 805 fathoms, August 11, 1909. 



U.S.N.M. no. 103021, 1 specimen in poor condition, station 5530, latitude 

 9»26'45" N., longitude 123°38'30" E., depth not given, August 11, 1909. 



