II4 
Synopsis ofthe species: 
I. Barbel 3 times longer than head. Tongue with teeth. 
31 luminous organs in the ventral series between pec- 
torals and ventrals, 28 in the lateral series from gill- 
opening to) vertical (through) ventrals) 21) 5 ci sae 2 ee M. melanops p. 114. 
II, Barbel shorter than head. Tongue without teeth. 27 
luminous organs in the ventral series between pectorals 
and ventrals, 24 in the lateral series from gillopening 
to jertical ‘throughs *venteals:, on... estat ead eee be tate M. valdiviae p. 115. 
1. Melanostomias melanops Brauer. 
Melanostomias melanops Brauer, Zool. Anz. XXV. 1902, p. 284. — Deutsche 
Tiefsee-Exp. Tiefseefische 1906. p. 53. 
Fig. 41. Melanostomias melanops Brauer (after Brauer). 
Byi2s Dyaae N17 wee Ge Naeoe 
Height 7, head nearly 7; diameter of eye 5'/,, slightly more 
than length of snout. Barbel 3 times as long as head, thick, 
its distal part lamellated, ending in a thin filament. Pectorals 
shorter than half head, ventrals nearly at the beginning of 
the last '/, of the body, longer than head, reaching to anus. 
8 intermaxillary teeth, the first and third small, the other 
ones longer, the fifth the largest. A group of 5 teeth in the 
maxilla, equal to the large intermaxillary teeth, behind them 
about 24 small close-set teeth, directed backward. 11 mandi- 
bulary teeth, the first two and the fourth small, the third the 
largest, the rest in two groups, in which the height increa- 
ses posteriorly. All large teeth bicuspid and depressible. 
Vomer with one pair of teeth, palatines with 4, tongue with 
two teeth. The ventral series of luminous organs consists of 
8 near isthmus, 31 from pectorals to ventrals, 11 from ven- 
trals to anal, 12 from there to caudal. In the lateral series 
28 from gillopening to vertical through ventrals, 12 from here 
to vertical through anal. Velvety black. Eye black. Base 
