168 
with its hinder end scarcely dilated, surpassing eye with 1'/, 
eye diameter. Praeopercular margin very oblique. Origin of 
dorsal immediately behind vertical through origin of ventrals, 
situated before middle of length, its distance from snout much 
larger than its distance from hindborder of adipose fin. Origin 
of anal below middle of last '/, of dorsal. Pectorals below 
middle of height, surpassing origin of ventrals. Ventrals reaching 
to about seventh anal ray. Scales cycloid. Luminous organs: 
a somewhat pearshaped antorbital organ, dorsally from nostril, 
with its long axis parallel to the axis of the body, its point 
extending to the median crest of the snout; a roundish sub- 
orbital organ, somewhat behind the middle of the pupil, its dorsal 
border extends to the level of the iris and is bordered with black, 
its lower silvery half reaches to maxillary. 3 branchiostegals; 2 
operculars above each other, the smaller lower one behind upper 
jaw. 5 PO, the fourth outside the series, above and somewhat 
behind the third, the first and second separated by a space 
much larger than that between the following. The 2 PVO 
in an oblique line, the posterior near the upper base of the 
pectoral, the anterior obliquely before and below it, above 
the interspace between the first and second PO. PLO nearly 
midway between pectoral and lateral line, at its lower border 
a large luminous scale. 5 VO, the second and third outside 
the series, the third higher than the second. 11—12 AO, the 
anterior group, above the anterior ?/, of the anal, contains 6 
organs, the anterior and posterior of which are outside and 
above the remaining. The posterior group contains 5—6 organs 
in a series beginning above the last anal ray. 4 Prc, the 
hindermost close to the lateral line and distant from the 3 
anterior ones which are situated at the ventral profile. VLO 
much nearer to lateral line than to origin of ventral. 3 SAO 
vertically above the anus, the uppermost close to the lateral 
line as also Pol, which lies above the last organ of the anterior 
AO. Length about 95 mm. 
Habitat: Bali Sea (521 M.)!; Banda Sea (1500—o M. 
vertical net)!; Arafura Sea (560 M.)!. 
13. Myctophum caeruleum (Klunz.) [Fig. 65, b; p. 171] 
Scopelus caeruleus WKlunzinger, Abh. Zool. bot. Ges. Wien XXI. 1871, p. 592. 
Scopelus engraulis Giinther, Challenger Rep. XXII, Deep-Sea Fishes, 1887, p. 197. 
