157 
hind the base of the ventrals. Caudal forked. Scales cycloid. 
Luminous organs: an antorbital on the dorsal frontborder of 
the orbit, on the frontborder of the praeopercle a larger dorsal 
one, on the level of the lower margin of the eye. A smaller 
ventral one below it on the level of the lower part of the 
maxilla. Three in each branchiostegal series. 5 PO in a series 
from the isthmus to the base of the ventrals. 2 PVO, one at 
the lower opercular edge, slightly behind the second PO; the 
other obliquely behind it at the ventral edge of the base of 
the pectoral. PLO at the upper margin of the opercle. VLO 
in the vertical through the ventral, midway between it and 
the lateral line. 4 VO in a series from ventrals to anal, the 
second of which is slightly displaced dorsally outside the 
series. Above the last one a series of 3 SAO, angularly bent 
and obliquely directed to the lateral line. A series of 6 AOa 
followed behind the anal by a series of 3 AOp, which latter 
is separated from 2 Pre on the lower part of the end of the 
tail. Pol slightly behind last AOa in the lateral line. Between 
adipose fin and caudal a luminous patch, a smaller one be- 
tween AO and Prc. Blackish, fins lighter. Length 220 mm. 
Habitat: Banda Sea (1500—o M., vertical net)!. — Indic 
to26,,5.:/) Pacitie, between) 27° 39 .N. “and \/77.N.;) Atlantic 
between 14> 39° N. endi 3° 55'S: 
4. Myctophum pterotum (Alcock). 
? Scopelus brachygnathos Bleeker, Act. Soc. Sc. Indo-Neerl. I. 1856, Vischsoort. 
Menado p. 651). 
Scopelus (Myctophum) pterotus Alcock, Ann. Mag. Nat. Hist. 1890, p. 217. 
Myctophum fibulatum Gilbert & Cramer, Proc. U.S. Nat. Mus. XIX. 1897, p. 411. 
Scopelus pterotus Alcock, Descr. Cat. Ind. Deep Sea Fishes, 1899, p. 267. 
Myctophum fibulatum Gilbert, Bull. U.S. Fish. Comm, XXIV. (1903) 1905, p. 596. 
Myctophum (Myctophum) pterotum Brauer, Deutsche Tiefsee-Exp. Tiefseefische 
1906, p. 182. 
Myctophum pterotum Max Weber, Siboga-Exp. Fische 1913, p. 86. 
BD: 11—13; A. 17—19; P. 12—16; V. 8; L. 1. 28—34. 
Rather stout, compressed. Height 3+*/;—4, head about 3, 
eye 2°/,—3. Snout bluntly rounded, more than twice in eye. 
Interorbital space nearly flat, 1'/, in eye. Mouth somewhat 
1) See Max Weber, Siboga-Expeditie. Fische, 1913, p. 669. 
