Specimens examined:5 (SL 82.0〜142.0 mm). Depth:420〜850 m.
Counts:D 12〜13; A 36〜39; GR 4+9〜10. OV 18〜19; VAL 13〜14+14;IP 11〜12; PV 18〜21; VAV 13〜14; AC 23〜24+4〜5=28〜29; IC 72〜74; BR 8〜9.
(Family):Body elongate and compressed. Mouth large, except genus Ichthyococcus. Gill rakers present. No barbel on chin. Pectoral fin low on body. Serial photophores present. (Genus):Six or 7 longitudinal raws of minute photophores present above OA photophores and a single longitudinal row between OA and IC; a median raw of them along lateral line extending to caudal fin. Jaws teeth uniserial except for tip of lower jaw. BR 8〜16. Photophores present on isthmus. No adipose fin. (Species):Last two AC not grouped together. Dorsal origin nearer to caudal base than to tip of snout. Anal fin rays 36〜41*. BR photophores 8〜9; VAV 13〜14; AC 28〜29; IC 72〜75*. Gill rakers 12〜14*.
Distribution:
Warm waters of Atlantic Ocean, except for eastern South Atlantic. Type locality-Madeira.
Remarks:
The genus includes 4 species. * Reference data from Mukhacheva (1978). (Fujii)