Specimens examined:6 (SL 89.8〜142.5 mm). Depth:706〜820 m.
Counts:D 14〜15; A 13〜15; P1 15〜17; GR 4+1+7〜9=12〜14; SLL 37〜38. PO 5; VO 5; AO 6+2; Pol 1; Prc 2+1.
本属は8種を含み,大西洋熱帯水域からはカガミイワシのみ知られる。*印はHulley (1981) とNafpaktitis et al. (1977) より引用。(藤井)
Distinctive characters:
(Genus):Supracaudal and infracaudal luminous glands large, single, borderd by heavy black pigment (Fig.). No large crescent of whitish tissue on posterior half of iris. Origin of dorsal fin somewhat in front of base of pelvic fin. Photophores and lateral line well developed. (Species):PO4 abruptly and highly elevated, about over PO3. Length of SCG about equal to that of ICG. Gill rakers 4+1+7+10, total 12〜15*. AO photophores 5〜7+2, total 7〜9*.
Distribution:
Temperate to tropical waters of Pacific, Indian, and Atlantic oceans. Type locality-eastern Pacific.
Remarks:
The genus includes 8 species. Only L. luminosa is known from the tropical Atlantic. * Reference data from Hulley (1981) and Natpaktitis et al. (1977). (Fujii)