1830 
D. Ill, 8, I, first branched ray 1 1/2 to 2 in head; 
adipose fin 2 2/5 to 3 1/3; A. Ill, 16, I to III, 19, I, 
first branched ray 1 2/3 to 2 l/l0; caudal 1 1/3 to 1 2/5, 
deeply forked; least depth of caudal peduncle 5 to 7; pectoral 
1 3/5 to 1 2/3; ventral 1 4/5 to 2 1/2. 
Largely dark brown, paler below. Sides of head and 
trunk silvery, all with metallic or iridescent luster. Iris 
pale, silvery. Photophores usually all pearly, with dusky or 
blackish edges. Fins pale brown to whitish, caudal largely 
dusky basally. 
» 
Atlantic, Indian and Pacific Oceans. One of the best 
known species, distinguished by its tapering body and long 
slender caudal peduncle, firmly iridescent scales, the dorsal 
fin well advanced and the snout strongly protruded. Brauer 
gives the anal photophores 4 to 8 -f 9 to 14. According to 
* 
Taaning the vertebrae 40 or 41. 
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