161 
the dorsal slightly below the level of the ventral orbital margin 
the lower behind the angle of the maxillary; 3 branchiostegal 
ones. 5 equidistant PO in a series between isthmus and 
ventrals. The posterior PVO at the lower base of the pectoral, 
the anterior one before and below it, opposite to the second 
PO. PLO obliquely above the pectoral but below the lateral 
line. 4 VO in a continuous series between ventrals and anus. 
Anterior AO 7—9, generally 8, above the anterior ?/, of the 
anal. Posterior group (AOp) 8—10, mostly 8, the anterior 3 or 4 of 
which are situated above the last '/, of the anal. 2 Prc, the 
last of which lies higher but conspicuously below the lateral 
line. 3 SAO in a steeply ascending oblique or slightly con- 
cave line, the most ventral of them above or somewhat before 
the last VO; the uppermost near the lateral line in the ver- 
tical through the origin of the anal. Pol somewhat below the 
lateral line, above the last anterior AO. 2—3 supracaudal 
luminous plates in the male, 4—5 infracaudal ones in the 
female. Steel blue. Length 100 mm. 
Habitat: Banda Sea (surface)!. Near northcoast of New 
Guinea. — Admirality islands. Mediterranean. Atlantic from 
about 60° N. to Canarian islands. 
7. Myctophum affine (Liitken). 
Scopelus affinis Liitken, Spolia Atlantica, Scopelini, 1892, p. 252. 
Myctophum affine et opalinum, Goode & Bean, Oceanic Ichthyol. 1895, p. 72. 
Myctophum nitidulum Garman, Exp. Albatross, XXVI. Fishes, 1899, p. 266. 
Rhinoscopelus oceanicus Jordan & Evermann, Bull. U.S. Fish. Comm. XXII. 
(1902) 1904, p. 168. 
Myctophum margaritatum Gilbert, Bull. U. S. Fish. Comm. XXIII. (1903) 
1905, p. 596. 
Myctophum (Myctophum) affine Brauer, Deutsche Tiefsee-Exp. Tiefseefische, 
1906, p. 190. 
Myctophum affine Gilbert, Mem. Mus. Comp. Zool. Harvard Coll. XXVI. 1908, 
p: 217. 
Myctophum affine Zugmayer, Exp. Monaco, XXXV. Poissons. I9II, p. 27. 
Myctophum affine Max Weber, Siboga-Exp. Fische, 1913, p. 87. 
Peete 75 A 205 Pts 3 V--9; LiL, about 41. 
Height 4—4'/,, head about 4, eye 27/,—3, more than twice 
length of the bluntly rounded, declivous snout, which has a 
median keel. Mouth oblique. End of upper jaw dilated, 
reaching nearly to angle of praeoperculum. Origin of dorsal 
much nearer to tip of snout than to root of caudal, above 
INDO-AUSTRALIAN FISHES II, : II 
