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, 16—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.). — Indic, between Chagos 
Archipelago and Seychelles. 
2. Chauliodus Bloch, Schneider. 
(Biocu, 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 '/, of 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, 
