MARINE SILVER HATCHETFISHES — SCHTJLTZ 599 



phore. In these three species the dorsal blade is low, as is indicated 

 in the key on p. 595. 



Description: Counts made are given in table 1, p. 591, and table 

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

 photophores are arranged as shown in figure 3, p. G23. 



Greatest depth of body 2.1 to 2.4 in standard length; exposed part 

 of longest spine in dorsal blade 2.2 to 2.9 times in length of base of 

 soft dorsal; no postorbital spine; ventral edge of pectoral shield with- 

 out sharp points although edge is somewhat scalloped. 



Color: The color pattern is shown in figure 3, p. 623. 



Range: This pelagic species lives in considerable depths of the 

 ocean. It probably is confined to the Atlantic Ocean and is replaced 

 in the Pacific Ocean by A. pacijicus, which is a very close relative. 

 I have not been able to check the specimens reported from the Indian 

 Ocean. I studied 12 lots from the Atlantic Ocean as follows: 1 speci- 

 men from off Delaware, 5 off Georgia; 3 off Florida, 2 from the Car- 

 ibbean, 1 from off Jamaica; 2 off Puerto Rico, 1 from Lesser Antilles, 

 and 1 from Gulf of Mexico. It has been taken as far south as lat. 31° 

 S. (Barnard, 1925) and as far north as lat. 39°56' N. (USNM 31709); 

 Norman (1939) reports depths of capture to 3,872 meters, but since 

 closing nets were not used this depth is uncertain. The usual depths 

 are less than 1,000 fathoms. 



Argyropelecus pacijicus, new species 



Figure 4 



Argyropelecus afinis, Townsend and Nichols, Bull. Amer. Mas. Nat. Hist., vol. 52, 

 p. 11, 1925 (off Lower California in 868 to 930 fathoms).— II rev, Journ. 

 Pan-Pacific Res. Inst., Honolulu, vol. 4, No. 4, p. 3, 1929 (off California). — 

 Tcrron, Anal. Inst. Biol. Univ. Nac. Mexico, p. 76, 1932 (on Ulrey). — Haig, 

 Pacific Sci., vol. 9, p. 321, 1955 (off Mauna Loa lava flow, Hawaii). 



Holotype: USNM 164000, Mauna Loa lava flow, Kona, Hawaii, 

 June 6, 1950, collected by Gosline, Hays, and Keen, standard length 

 56.5 mm. 



Paratypes: USNM 87563, Albatross station 5686, April 22, 1911, 

 lat. 26°14' N., long. 114° W., depth 930 fathoms, 1 specimen, 40 mm. 

 USNM 177930, Manna Loa lava (low, Kona, Hawaii, June 6, 1950, 

 1 specimen, 57 mm. collected by Y. Yamaguchi. SIO S10-54-83A, 

 California off San Diego, lat. 32°51.5' N., long. 117°45' W., to lat. 

 33°05.5' N. and long. 117°58' W., November 4, 1954, no depth given, 

 5 specimens, 33 to 58 mm. SIO SlO-55-258, Southwest of Galapagos 

 Islands, lat, 2°0'-3' S., long. 90°33 , -54 / W., depth zero to 925 fathoms, 

 June 26, 1956, 9 specimens, 8 to 67 mm. 



The following paratypes are in the collections of the Stanford 

 Natural History Museum (all SNHM numbers): 48542, lat. 0°0' N., 



