158 
oblique. Dilated hinder end of the maxilla reaching nearly the 
praeopercular margin. Opercle rather broad, its membrana- 
ceous part produced. Origin of dorsal behind origin of ven- 
trals, nearly in the middle of the length, its end above the 
first rays of the anal. Adipose fin above last rays of anal. 
Pectorals narrow, very long, reaching on anal. Scales cycloid, 
extremely deciduous. Luminous organs: A very small antor- 
bital on the upper frontborder of the eye. Two operculars 
on the praeopercular margin, the upper on a level with the 
ventral border of the eye, the smaller, lower near the angle 
of the maxillary. Three branchiostegal ones in a curved line. 
5 between isthmus and ventrals (PO), the fifth pair of which 
far apart, separated by the entire width of base of ventrals. The 
posterior PVO at the lower base of the pectorals, the anterior 
in front of it, obliquely above the second PO, and covered 
by the opercular flap as well as PLO, which is situated high 
up on the level of the lateral line. 4 VO, the first, third and 
fourth in a series between pectorals and anus, the second 
displaced high up outside the series, obliquely above the first 
VO. The first group of AO consisting of 5—6 organs above 
anterior */, of anal, the second group beginning above last 
ray, consisting of 4—5 organs; separated from them the two Pre, 
the hindermost of which is near the lateral line. VLO much 
nearer to lateral line than to ventral. The 3 SAO forming a 
blunt angle, the anterior above the third VO, the third in 
the lateral line. Pol in the lateral line, above posterior part 
of anal. 3—4 luminous patches may be present (¢') between 
adipose fin and caudal. Silvery, scaleless parts blackish brown. 
Base of caudal and anal and upper rays of pectorals blackish. 
Length 100 mm. 
Habitat: Macassar straits (11 M.)! — Indic; Pacific (Sand- 
wich islands); South Atlantic (37° 31’ South). 
5 Myctophum coccoi (Cocco). 
Scopelus coccot Cocco, Giorn. Scienz. per la Sicilia, VII. 1829, p. 143. 
Alysia loricata Lowe, Proc. Zool. Soc. London, 1839, p. 87. 
Scopelus coccoi Giinther, Cat. Brit. Mus. V. 1864, p. 413 (p. p.). 
Scopelus (Rhinoscopelus) coccoi Liitken, Spolia Atlantica, Scopelini, 1892, p. 243. 
Myctophum (Myctophum) coccoi Brauer, Deutsche Tiefsee-Exp. Tiefseefische, 
1906, p. 199. 
D. 1o—11; A. 19—21; P. 14—15; V. 8; L. 1. 39—4T. 
