238 
Drololychrms 
lr 
R: '<°AH and TRE17AYAS, Danish Dana Exped. Ocoanogr 
1929, p.27. Type Diplolyoh us lucifer RHCAH and 
* Rep., ICo#5 
TRHTAVAS. 
9 
■ louth cleft straight. Hangs moderate, erect maxillary teeth curved forward, 
12 to 16 in adults. Teeth on gill arches well developed. Post ocular or ~an 
w J- V- 
v/ith 2 luminous surfaces, larger behind and smaller below eyes, both sometimes 
connected by slender 'trip. Post-temporal replaced by strong ligament, Ctomach 
lafge* 
3 
AIT AIT BIS OF SPECIES 
a. Hind part of postocular luminous organ long as eye; barbel J/2 length of 
head, with 1 filament near end 
lucifer. 
a. Hind part of postocular luminous organ 1/2 of eye; barbel long as head. 
with 1 filaments near end 
nononema. 
a. Hind part,of postocular luminous organ 1/2 of eye; barbel little over l/2 
of head, with 2 filaments near end 
bifilis 
Diploly chnus lucif er Regan and Trewavas 
Dipldychnus lucifer PJi" AIT and T3EITAVAS, banish Dana Oceanogr. Rep., bo. 5, Hay 
30, 1929, p.28, pi. 5, fig.l. II. 25 ° 11 * F. 20 ° 57 1000 meters. At Ian- 
♦ 
tic. 
Depth 6 2/3; head 6. Eye 6 l/3 in head; barbel l/2 head, black stem 
ending in swollen part, bearing pair of luminous bodies and followed by very 
small white tip l/3 black swollen part, single very short filament near end. 
Post ocular part of luminou s or^an equals eye. small oblong luminous patch 
just behind preopercle. Rateral photop’ ores 22 between gill opening and ventral, 
25 between ventral and anal. Ventral series 10 between isthmus and pectoral. 
