3Sf 
origin, 11 between ventral and o.nal and then IS to caudal base. 
D. 14, fin height 2 l/5 in total head length; A. 17, fin height 3; caudal 
1 2/3, well forked, lobes pointed and lower longer, larger and with rays all 
stronger; least depth of caudal peduncle equals eye; pectoral 2 l/8 in total 
head length, rays 5; ventral equals head, rays 7. 
Dusky or sooty brown generally, nearly blackish brown on belly and under 
surfaces. Iris neutral gray. Luminous organ on cheek cream white. Fins all 
T 
pale brownish to whitish* 
Diagnosis* Related to the Atlantic Melanostomias biseriatus Regan and Tre- 
wavas in structure of the barbel, especially in having 2 sets of globular or 
ovoid white bodies along the median axis or midrib* From it the present species 
differs, however, in that the white bodies extend much nearer the base of barbel 
and its terminus has at least 3 large bodies but no terminal filament* 
Type U.S*N*M* No* 
2587. D # 5458* Hermana Mayor Light, S* 21 E*, 7. 5 miles (N* 15 
54 * 42 Tt E* 119 ° 44 f 42 11 ), west coast of Luzon. In 297 fathoms. May 8, 
1909. Length 180 mm* 
Melanostom ia s biseriatus Regan and Trewavas 
Melanostomias bise riatus REGAN and TREY/AVAS, Danish Dana -^xped* Oceanogr. Rep*, 
No.6, March 10, 1930, p.113, fig.109 -a (end of barbel). N. 33 ° 18 ’ W. 
o 
56 3 1 , 80 to 150 mm* 
Depth 10; head 5 to 6. Eye 5 in head; barbel twice long as head; basal 
2/5 pigmented, terminal part with white axis, with narrow translucent band in 
front and behind each including series of white luminous bodies; hind series 
