150 PROCEEDINGS OF THE NATIONAL MUSEUM vol.86 



The following specimens are also in the collections of the United 

 States National Museum : 



U.S.N.M. no. 100526, 1 specimen, 23 mm, Grampus station 10182, off Ber- 

 muda, latitude 30°27' N., longitude 66°05' W., 1,400 to meters, February 19, 

 1914. 



U.S.N.M. no. 100542, 1 specimen, 30 mm, Grampus station 10176, off Ber- 

 muda, latitude 32°30' N., longitude 65°48' W., 750 to meters, February 5, 

 1914. 



U.S.N.M. no. 100341, 1 siiecimen, 23 mm, Gnunpus, off South Caroliiin. 

 latitude 32'"33' N., longitude 72''14' W., 1,100 to meters, January 30, 1914. 



U.S.N.M. no. 103022, 1 specimen, 15 mm (bad condition), Albatross station 

 5184, latitude 10°18'30" N., longitude 122°23'30" E., 505 fathoms, March 30, 

 1908. 



U.S.N.M. no. 10302:3, 1 specimen, 13 mm, Albatross station 5120, latitude 

 13''45'30" N., longitude 120°30'15" E., 393 fathoms, January 19, 1908. 



Three lots of Argyro pel ecus here referred to hemigymnus possess 

 more numerous gill rakers and may represent a distinct form of that 

 species. They were taken in the Mediterranean and are listed as 

 follows : 



U.S.N.M. no. 40053, 18 specimens in bad condition. 20 to 28 mm, ]Mossina, Italy, 

 November, 1883. 



U.S.N.M. no. 92244, 2 .specimens, 33 and 35 mm, Ganzirri, Messina, Italy. 



U.S.N.M. no. 10143, 2 si)ecimens, one in bad condition, other, length 30 mm, 

 Mediterranean Sea. 



ARGYROPELECUS AMABILIS (Ogilby, 1888) 



Stentoptychidcs aniabilis Ogilby, Proc. Linn. Soc. New South Wales, ser. 2, vol. 3, 



p. 1313, 1888. 

 Argi/ropelecus olfersii (non Cuvier) Goode and Bean, Oceanic ichthyology, p. 



126 (in part), pi. 39, fig. 148a, 1895. — Roxjle and Angfx, Result. Campagnes 



Sci. Prince de Monaco, fasc. 86, p. 48, pi. 2, figs. 24, 24a, 1933. 

 Argyropelccus aniabilis McCuixocH. Rec. Australian Mus., vol. 14, no. 2, p. 118, 



pi. 14, fig. 3, 1923. 

 Argyropelccus autrorsospinus Schultz. Smithsonian Misc. Coll., vol. 91, no. 27, 



p. 1, fig. 1, 1937. 

 Argyropelccus micra can thus Parb. Bull. Bingham Oceanogr. Coll., vol. 3, art. 7, 



p. 52, fig. 21, 1937. 



Parr (1937, p. 52, fig. 21) described as new Argyropelccus micra- 

 canthu-s^ based on a specimen but 13 mm in standard length. During 

 my examination of many more than a hundred specimens of various 

 species of Argyropelccus from postlarvae up to large adults, it was 

 observed that the anal, preanal, and subcaudal photophores do not all 

 appear at once but develop gradually, tlie posterior one forming last. 

 This gradual development of the anal pliotophores also occurs in the 

 genus Polyipnus. Dr. Parr's figure 21 of A. micracanfhus is obvi- 

 ously taken from a very young Argyropelccus^ because the anal and 

 subcaudal photophores are in little circular masses which at larger 

 sizes extend a little anteriorly and considerably posteriorly. In con- 



