SAOo..! interspace one and one-half to two times that of SAO,.-; SAO series in a steeply 

 oblique, usually straight line that passes well behind VO,-,. AOa, elevated to about level of 

 SAO^; last AOa but little elevated. Pre interspaces progressively wider, the last 3 in a nearly 

 straight, oblique line. Luminous scale at PLO about three-fourths the vertical diameter of 

 orbit, the tissue convoluted. Dn large, expanded to ethmoidal crest and of about equal size in 

 both sexes; Vn extending posteriorly to under orbital margin and upward to Dn behind nasal 

 apparatus; much of the Vn is covered by a heavy band of dark pigment. Dorsal origin usually 

 somewhat before pelvic origin; bases of dorsal and anal fins and of anal and adipose fins 

 overlapping. 



Size: To 78 mm in eastern Pacific. A 118-mm specimen has been taken in the southeastern 

 Atlantic Ocean. 



Least depth of capture: To 175 m at night. 



Distribution: In the eastern Pacific eight specimens have been taken from an area from 

 01° S to 16° N and 130° to 137° W; one specimen known from 26° 14.0' N, 141° 34.5' W, and one 

 from 03° 25' N, 126° 00' W. The type locality is in the northeastern Atlantic Ocean. 



Diaphusfragilis 



Tuning, 1928 



Fig. 107 — Diaphusfragilis, male, 84.0 mm. 



Description 



D. 17-18; A. 17 (16-18); P. 11(12); AO 6 -H 5 (4), total 11(10); gill rakers 5-6 + 1 + 12 

 (11-13), total 19 (18-21); vertebrae 35 (36). 



Inner row of enlarged, rather widely spaced teeth on the lower jaw are immediately 

 diagnostic of this species, even for specimens £.s small as 20 mm. PLO a little above midway 

 between lateral line and pectoral origin; VLO about midway, occasionally slightly lower, 

 between lateral line and pelvic origin. SAO2.3 interspace about one and one-half times that of 

 SAO, .J. SAO series in a nearly straight, steeply oblique line; SAO., and Pol at lateral line. First 

 and last AOa elevated. V0-, and SAO, ^ form gentle curve. Pre interspaces progressively wider. 

 Opercular margin tapers to sharp point under PLO. Ant of males usually slightly larger and 

 more sharply delineated than that of females. 



Size: To about 90 mm. 



Least depth of capture: To 100 m at night. 



Distribution: Known in eastern Pacific Ocean from about 23° S, 91° W, to the Hawaiian 

 Islands and south to the equator. I have seen two specimens from about 40° N, 164° W (Fig. 

 108). 



116 



