345 
on tongue; well developed teeth on gill arches. Postocular luminous organ 
we 1 ! developed. Dorsal rays 13 to 16. Anal rays 16 to 20. Dorsal ° r>d anal 
begin in same vertical, anal extends farther back. Pectoral normal, rays 5 or 6. 
Ventral rays 7, far back, usually twice as distant from snout end as from caudal 
base. 
ANALYSIS OF SPECIES 
1 
a. Pectoral rays 5. 
1 
tu Barbel with transparent terminal part, generally expanded and laterally 
compressed, containing end of axis and 1 or more rounded or oval opaque 
white luminous bodies. 
1 
£. E nd of axis of barbel straight, barbel 5/6 to 1 l/2 length of head, stem 
black basally and unpigmented terminally; photophores 23 to 27 in ventral 
series between pectoral and ventral fins. 
1 
ji. Terminal part of barbel with 2 strips of loose luminous tissue, 1 in 
front o 4 ‘ axis, 1 behind; white body at proximal end of anterior strip, 
at base of tapering terminal end of posterior strip, at base of tapering 
terminal appendage usually ends in filament; 23 to 25 photophores in 
ventral series between pectoral and ventral spilo rhynchus. 
d. ierminal part of barbel with 2 white bodies behind axis and 1 in front. 
1 
e. Depth 7 l/3; barbel with terminal filament valdiviae. 
e Depth 9 l/2; barbel without terminal filament 
philinpinus. 
3 --- 
_q. Terminal part of cartel with 2 white bodies behind axis, terminal much 
larger, with strip of granular luminous tissue in front of axis; no fila¬ 
ment; 25 photophores in ventral series between pector 1 and ventral 
melanooaulus. 
