109 



in 4 groups, increasing in size posteriorly. Maxilla with a few 

 small pointed teeth. Mandible with 12 unequally large teeth 

 in 3 groups, behind them 3 or 4 smaller ones. 2 fangs on 

 vomer and smaller teeth on palatines and tongue. Luminous 

 organs: an inconspicuous suborbital and a revolving small 

 postorbital one; 15 16 between branchiostegal rays, a few 

 on opercle; 33 35 in the ventral series from isthmus to ven- 

 trals, 1 6 17 between ventrals and anal, 32 between anal and 

 caudal. In the lateral series 22 24 from gillopening to vertical 

 through ventrals, 16 from here to anal, behind anal 12. 

 Velvety black. Fins translucent. Iris black. Barbel black, with 

 a subterminal white ring. Length 180 mm. 



Habitat: Halmahera Sea (1600 m.)!; between Australia 

 and Sumba (surface); North of Geelvink bay, New Guinea 

 (surface); West of Sumatra (594 m.). Indie, between Chagos 

 Archipelago and Seychelles. 



2. Chauliodus Bloch, Schneider. 



(BLOCK, SCHNEIDER, Systema Ichthyolog. 1801, p. 430). 



Elongate, strongly compressed, covered with very thin, 

 deciduous, hexagonal scales. Head much compressed, elevated 

 and short. Gape of mouth oblique, very wide as also the 

 gillopening. Opercle short. Interopercle rudimentary. Chin 

 with a rudimentary barbel. Pectorals moderate, ventrals long, 

 situated in the second ! / 3 f the length. Short dorsal before 

 ventrals, its first ray produced in a long filament, reversible 

 in frontal direction. Short adipose fin opposite to anal. Caudal 

 forked. Vent near anal. A praeanal adipose fin. Large inter- 

 maxillae with four enormous fangs on each side, mandibles with 

 4 5 excessively long ones, besides a few moderate teeth. 

 None of the large teeth are received within the mouth. 

 Maxillae with numerous close-set small teeth. Palate with a 

 single series of small teeth. Tongue edentulous. A small sub- 

 orbital luminous organ. Luminous organs between the bran- 

 chiostegal rays. On each side a ventral series of luminous 

 organs from isthmus to caudal, slightly above it a second 

 series from gillopening to anus, besides numerous small ones 

 scattered between them. Branchiostegals numerous. No pseudo- 

 branchiae, nor gillrakers. 



