1 66 



second PO, above and before upper base of pectoral, nearly 

 midway between it and the lateral line. 4 VO in a series 

 between ventrals and anus. 10 13 AO in two groups, the 

 anterior group, situated above the anal, contains 6 8, the 

 posterior group, beginning above last anal ray or behind it, 

 contains 3 5 organs, the most frequent arrangement being 

 /-)-4- Widely separated from them the two Prc, which are 

 rather close together, obliquely arranged, the posterior one in 

 the middle between the lateral line and the ventral profile. 

 VLO midway between origin of ventral and lateral line. 3 SAO 

 in a curved line with the concavity forward, the anterior above 

 and slightly before the last VO, the middle one in the vertical 

 through the anus, the uppermost immediately below lateral 

 line. Pol immediately below the lateral line, about above last 

 AO of the anterior group. An infracaudal luminous patch. 

 Silvery, snout yellowish white, top of head and back blackish. 

 Length 75 mm. 



Habitat: Macassar Straits (surface)!; Halmahera Sea 

 (1000 o M., vertical net)!; Banda Sea (surface)!; Arafura Sea 

 (surface)!; Bali, Celebes and Batjan (Bleeker). Mauritius; 

 Hawaian islands. 



ii. Myctophum dumerili (Blkr.). ] ) 



Scopclus Dumerili Bleeker, Act. Soc. Sclent. Ind. Neerl. I. 1856, Beschr. Vissch. 



Menado, p. 66. 



Myctophum nocturnum Poey, Mem. Hist. Nat. de Cuba 1860, II. p. 426. 

 Myctophum (Scopelus') Dumerili Bleeker, Atl. Ichth. VI. livr. 27. 1875, p. 158. 

 Lampanyctus lacerta Goode & Bean, Oceanic Ichthyology 1895, P 81. 

 ? Diaphus urolampus Gilbert & Cramer, Proc. U.S. Nat. Mus. XIX. 1896^.408. 

 Myctophum {Diaphus) lacerta Brauer, Deutsche Tiefsee-Exp. Tiefseefische 1906, 



p. 214. 

 Diaphus nocturnus Gilbert, Bull. Mus. Comp. Zool. Harvard Coll. XLVI. 1906, 



P- 255. 



D. 1516; A. 1516; P. 12; V. 89; L.I. about 34. 



Height more than 5, head 3 ! / 4 . Eye 3 3 ] / 3 , more than J / 3 

 longer than snout. Upper jaw scarcely dilated at its hinder end, 

 nearly reaches to the praeopercular margin, which is oblique. 

 Dorsal in the middle of the body, its origin before middle, 



i) See Max Weber, Siboga-Expeditie Fische 1913, p. 670. 



