Dn elongate, extending over entire upper margin of orbit; Vn small, rounded and hidden 

 at about level of lower margin of nasal rosette. Three or 4 photophores in a row on cheek before 

 preopercular ridge, 2 or 3 randomly placed between there and orbital rim. PLO well before 

 vertical from pectoral origin and 2 or 3 of its diameters below lateral line. PLO and PV0,.2 

 form posteriorly slanting straight line, PO^ often on this line. VLO 3 or 4 of its diameters below 

 lateral line. SAO3 and the 2 horizontal Pol at or very near lateral line. SAO series in a wide 

 angle (ca 140°). SAO, high on body, slightly less than midway between ventral profile and 

 lateral line. SAO1.2 interspace about one-third less than that of SAOj.i. The 3 Pol form nearly 

 right-angled triangle, first 2 in a nearly horizontal row near lateral line, a third Pol almost 

 directly below, often its diameter before, the anteriormost of the upper two. Pre 3+1, the first 

 3 closely spaced and nearly on same level, the upper much elevated and distant by a space one 

 and one-half times as great as that between first and third Pre. 



Size: To about 100 mm. 



Least depth of capture: To 200 m at night in the eastern Pacific Ocean. 



Distribution: L. procerus is known from the southwestern Atlantic and southeastern 

 Pacific Oceans. In the latter region, it has been taken primarily in the Peru Current from 

 about 07° to 35° S, and to 85° W. Becker, 1967, did not report the species from among the large 

 VITIAZ collections from the southwestern Pacific Ocean. 

 Discussion 



Lampichthys rectangularis Fraser-Brunner, 1949 (p. 1103, fig. 14) is herein regarded as a 

 synonym of L. procerus, as there appears to be insufficient evident to warrant retention of both 

 species. Fraser-Brunner stated that the principal differences lay in the arrangement of the 

 PVO, the lower position of VLO, the more posterior Pol, the fourth cheek photophore, and the 

 much more elongate form of L. rectangularis. However, he recognized that these differences 

 could be attributable to the large discrepancy in sizes of the specimens compared (22.3 mm vs 

 76 mm). Bussing (1965, p. 209, fig. 10) showed the number of cheek photophores to vary from 3 

 to 5 in specimens from off Chile. 



Notoscopelus Giinther, 1864 



Doral base notably longer than anal base; anal base beginning under last third of dorsal. 

 Upper PVO well above, lower PVO at lower end of, pectoral base. Two Pol (rarely 1 or 3) in 

 horizontal line. Pre 2 + 2 or 2 -1- 1. Ventral proeurrent caudal rays 12 or 13. Small patches of 

 luminous tissue, easily lost, are variously located on body and below some photophores. 



A single species in eastern Pacific Ocean. 



Notoscopelus resplendens 



(Richardson, 1844) 



Fig. 203 — Notoscopelus resplendens, 78.1 mm. The luminous scales of the body repre- 

 sent those of several specimens. 



215 



