154 



bb. Uppermost Prc below lateral line ; origin 

 of dorsal before that of ventrals; end 



of anal behind adipose fin M. malayanum p. 171. 



B. The first PO and the two PVO form an oblique 

 angle, all the 5 VO in a ventral series. A supra- 

 and infracaudal luminous patch. (Lampadend) . . . M. luminosum p. 172. 



i. Myctophum micropterum Br. 



Myctophum (Lampanyctus) oculium Brauer, Zool. Anz. XXVIII. 1904, p. 396. 



(nee Carman). 

 Myctophum (Lamp any ctus) micropterum Brauer., Deutsche Tiefsee-Exp. Tiefsee- 



fische, 1906, p. 239. 



Fig. 59. Myctophum (Lampanyctus} micropterum Br. (after Brauer). 

 Is infra- and supracaudal luminous scales. 



D. I3I6; A. 16 18; P. 1012; V. 8; L.I. 35. 



Height 5 5V a , head S'/s 3 l /v e y e 4 ! /5 5> i l / 2 times a * 

 long as snout. Upper jaw with its posterior end slightly dilated, 

 surpasses eye with more than one eye diameter. Praeopercular 

 border very oblique. Origin of dorsal behind ventrals, in the 

 middle of the length or somewhat before it, Origin of anal 

 below middle of dorsal, behind middle of length, ending below 

 adipose fin. Pectorals not reaching to ventrals, below middle of 

 height of body. Scales cycloid. Luminous organs kidney-shaped. 

 A small antorbital organ ventrally at the frontborder of the orbit. 

 Two superposed opercular organs behind the upper jaw, 3 bran- 

 chiostegal organs. 5 PO, the fourth quite outside the series above 

 the interspace between the third and fifth, on the level of 

 the pectoral fin or somewhat higher. The 2 PVO in a ver- 

 tical line above each other and above the interspace between 

 the first and second PO, the dorsal one close before the 

 middle of the base of the pectorals. PLO near lateral line, 

 before the vertical. of the 2 PVO. 5 VO, the second outside 



