NOTES OX SOME JAPANESE FISHES. 7 



surface of body ; those on the former not mucli larger than 

 tliose on the hitter. Lateral line high, concurrent with the 

 contour of back. All the fins without scales. 



Photophores : — The photophores of tlie species are like those 

 of Scopelus elongatus described by Raffaele'-' and of Notoscopelus 

 quercinus described by Goode and IjEAxf and differ from the 

 description of these only in very trifling points. Three photophores 

 on mandible, 1 just behind angle of preoperculuni ; pectorals 4 

 and thoracics 7 in numbei-, of which the lowest one pectoral and 

 the posterior 6 thoracics form a strongly-curved row, the convex- 

 ity directed downward ; a pectoral on base of pectoral fin, and 

 the uppermost pectoral immediately beneath lateral line, the 

 line of tlie two uppermost pectorals directed downward and 

 backw^ard ; anterolaterals 2, the upper of which is above second 

 pectoral counting downward from above, the row of these 

 photophores being directed backward and downward ; ventrals 6, 

 forming a strongly carved row ; mediolaterals o, the convexity 

 directed backward ; superanals 10, forming a series above anal, one 

 on the posterior end of the series being elevated above the general 

 level of the series ; posteroanals 8, in a horizontal series behind 

 anal ; posterolaterals 2, placed horizontally beneath the lateral 

 line, of which the posterior one lies slightly before adipose fin ; 

 precaudals 3, of which the posteriormost one lies immediately 

 beneath the lateral line. Three grandular whitish spots on 

 back before caudal base, and two of same on the root of lower 

 rudiraental caudal rays ; a small luminous streak directly above 

 eye ; still another luminous patch on the middle part of in- 

 terorbital ; luminous parts before and behind eye fainter than in 

 other allied species. 



* Mittheil. Z lol. Stat. Neapel, IX, p. 1S5, pi. VII, fig-. H. 

 t Oceanic Ichllivology, pp. S.VSi, pi. XXVI, fig. 8;î. 



