GOO PROCEEDINGS OF THE NATIONAL MUSEUM vol. 112 



long. 91°53' W., June 13, 1925, 1 specimen, 15 mm; 46533, lat. 3°52' 

 N., long. 86°43' W., 600 fathoms, 1 specimen, 21 mm.; 46525, lat. 

 0°17' N., long. 90°02' W., depth 500 fathoms, April 11, 1925, 2 speci- 

 mens, 9 to 13 mm.; 46591, Arcturus station 5912 74-Pt-3, 60 miles 

 south of Cocos Island at lat. 4°50' N., long. 87°00' W., depth 620 

 fathoms, May 25, 1925, 1 specimen, 41 mm.; 46617, Arcturus station 

 5866B, lat. 4°50' N., long. 87°00 / W., depth 600 fathoms, May 25, 

 1925, 1 specimen, 25 mm.; 46619 Arcturus station 5917, lat. 4°50' N., 

 long. 87°00 / W., depth 450 fathoms, 1 specimen, 10 mm. 



Description: Five specimens were measured in detail and these 

 data, expressed in thousandths of the standard length, are recorded, 

 respectively, for the holotype then the paratypes; standard lengths in 

 mm. are 56, 45, 46.4, 46, and 58. Greatest depth of pigmented area of 

 body 455, 528, 502, 506, and 516; least depth of caudal peduncle 98, 

 111, 110, 109, 83; greatest height of dorsal blade 36, 38, 47, 33, and 

 36;postorbital length of body 839, 806, 830, 815, and 827. Length of 

 groups of photophores: Anal 213, 255, 224, 228, and 229; preanal 116, 

 109, 106, 109, and 115; subcaudal 139, 129, 134, 133, and 131. Dis- 

 tance between preanal and anal groups of photophores 11, 7, 9, 11, 

 and 14. Distance between anal and subcaudal groups of photophores 

 18, 27, 22, 28, and 26. Distance from upper edge of last abdominal 

 photophore to upper edge of first preanal photophore 88, 109, 106, 113, 

 and 110. Distance from orbit to base of upper preopercular spine 

 152, 162, 168, 161, and 172. Distance from tip of snout to rear edge 

 of maxillary 250, 262, 263, 254, and 259. 



Counts made on the types are given in table 1, p. 591, and table 2, 

 p. 592; measurements made are given in table 3, p. 593. 



Color: The color pattern is shown in figure 4, p. 623. 



Range: This species occurs in the eastern Pacific westward to the 

 Hawaiian Islands. It has been taken to a depth of 930 fathoms 

 (USNM 87563). 



Remarks: This species differs from its closest relatives, A. affinis 

 and A. gigas, as indicated in the key on p. 595. 



Argyropelecus gigas, Norman 



Figures 5, 26a 



Argyropelecus gigas Norman, Discovery reports, vol. 2, p. 302, fig. 10, 1930 (type 

 locality, Eastern Atlantic Ocean). — Fowler, Bull. Amer. Mus. Nat. Hist., 

 vol. 70, pt. 2, p. 1208, 1936 (after Norman).— Parr, Bull. Bingham Oceanogr. 

 Coll., vol. 3, art. 7, p. 49, 1937 (after Norman).— Schultz, Proc. U.S. Nat. 

 Mus., vol. 86, p. 147, 1938 (on Norman). — Noronha and Sarmento, Verte- 

 brados da Madeira, ed. 2, Peixes, vol. 2, p. 141, 1948 (Maderia). — Maul, 

 Lfsta sistematica dos peixes assinalados nos mares da Madeira e fndice al- 

 phabetica, p. 13, 1949 (Madeira); Bol. Mus. Mun. Funchal, No. 4, art. 9, 

 p. 17, fig. 6, 1949 (Madeira). — Marshall, Aspects of deep sea biology, New 

 York, p. Ill, fig. V, 15, 1954. 



