(Genus):Base of dorsal fin about equal to that of anal. Four Prc. Caudal luminous gland absent. PVO in line with PO1. Five PO, PO4 highly elevated. Five VO, VO2〜3 progressively elevated. A luminous scale at PLO. (Species):Both Dn and Vn small. So and Ant absent. PLO nearer to base of pectoral fin than to lateral line (Fig.). Gill rakers 4+1+8〜9. Supraorbital spine absent. VLO nearer to lateral line than to base of pelvic fin. SAO3 and Pol 1〜1.5 times their diameters below lateral line. First AOp over base of anal fin.
Distribution:
Tropical waters of three major oceans. Type locality-western North Atlantic. (Fujii)