314 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 48. 



maxillary slender, not widened at tip, extending far behind eye 

 nearly to preopercle. Eye very large in adults, smaller in young as 

 usual in this group. Preopercle little oblique. Gill-rakers strong, 

 the longest 0.6 the diameter of eye, 6 + 11 in number. 



Dorsal posterior in position, midway between tip of snout and 

 base of caudal or slightly nearer the caudal, the middle of the dorsal 

 vertically above the third or fourth anal ray. Adipose dorsal over 

 the last anal rays. Pectoral inserted low, its upper rays on level 

 with lower margin of orbit, extending beyond base of ventrals, the 

 latter not reaching the vent. The caudal is gently forked, not rounded 

 as represented by Goode and Bean. 1 



Scales in adults crenulate, those along midlateral series weakly, 

 those along back most strongly incised. In the young the scales 

 appear to have entire edges. Scales of midlateral series much 

 deeper than the others, the first three or four of them perforated 

 and containing tubes of the lateral line, all others of the series without 

 trace of tubes. 



PTiotopliores. — A minute preocular on lower anterior orbital margin 

 below level of nostril, and a minute supraocular on upper orbital 

 rim vertically above posterior margin of pupil; both of these obscure 

 in adults. Mandibular photophores 3, opercular 2, in their usual 

 relations, the lower opercular spot immediately behind posterior 

 end of maxillary, very small, becoming obscure in adults. Pectorals 

 3, the suprapectoral low, wholly covered by the overlapping sub- 

 opercle, in advance of the upper pectoral rays and a little below 

 their level; upper infrapectoral immediately in advance of the 

 lower pectoral rays, lower infrapectoral in a line joining the upper 

 infrapectoral and the first thoracic, a little behind the second thoracic. 

 Thoracics 6, the first pair almost in contact, placed vertically below 

 the lower opercular spot, succeeding pairs progressively more widely 

 separating, the two series regularly diverging backwards, the last 

 pair in advance of outer ventral rays; the second interval (between 

 second and third pairs) the longest, first interval but little shorter, 

 the fourth the shortest, the third and fifth equal. Supraventral 

 low, vertically above first ventral pair, on a level with middle of 

 pectoral fin. Ventrals 6, the first pair nearly in contact on median 

 fine, nearer together than the bases of ventral fins; succeeding pairs 

 much farther from midventral line, each series forming a gentle 

 curve with the convexity outwards; interval between first and 

 second pairs longest, the others about equal. Supraanals 3, some- 

 what angulated, the angle varying in different individuals, but always 

 evident. Uppermost supraanal but little below the lateral line and 

 slightly in advance of the vertical from the first anal pair, the second 

 vertically above first anal ray, the lowest below and in advance of 



i Oceanic Iththyology, pi. 28, fig. 105. 



