DJaphus longleyi (?) 

 Fowler, 1934 



Fig. 123 — Diaphus longleyi (?), male, 55.8 mm. 



Description 



D. 13 (14); A. 13; P. 10-11; AO 5 (6) + 4 (5), total 9 (10); gill rakers 6 (5-7) + 1 + 12-13 

 (11-14), total 19-20 ( 18-22); vertebrae 33 (32). 



Body robust, deepest at pectoral origin. Caudal peduncle short, deep, its depth about 68% 

 of its length. Photophores moderately large, those of AO series averaging about a diameter 

 apart. First AOa not, or but little, elevated; last AOa elevated to about its diameter (often less) 

 above level of penultimate AOa. PLO and VLO a little nearer pectoral and pelvic bases than to 

 lateral line: SAO.t, Pol, and upper Pre three to four diameters below lateral line. SA0_..3 

 interspace no more than 1.5 times that of SAO i. 2. Posterodorsal margin of operculum mark- 

 edly angulate, often slightly recurved; operculum produced into blunt point at about PLO. Vn 

 of males much expanded anteriorly, reaching to nasal apparatus. 



Size: To about 55 mm. 



Least depth of capture: To 200 m at night. 



Distribution: This species, although described from the Philippines region, has been taken 

 primarily in the southeastern and central Pacific Ocean (Fig. 124). 



Fig. 124 — Capture localities in the eastern and central Pacific Ocean for Diaphus 

 longleyi, (solid circles), D. brachycephalus (solid squares) and D. andersem (solid triang- 

 les). 



139 



