DISCUSSION OF SPECIES A.ND THEIK DISTRIBUTION. 93 



NEOSCOPELUS MACROLEPIDOTUS, .Johxson. (Figures 108-109.) 



Neoscopelus man-oIepidoUs, Johnson, I'roc. Zo51. Soc, 1863, 44, pi. 7; Alcock, Aun. aud Maj;. Nat Hist 



1891, 11, ll.'9. * o ■ •) 



Scopelus macrolepidotiis, Guntuek, Cat. Fish. Brit. Mus., v, 18G4 414. 



Heiglit of tbe body is a little more than one fourth of total length (without caudal), 

 length of head one-third. Eye of moderate size, one-fifth of length of head, aud equal t(') 

 width of interorbital space, and to distance between its posterior margin and preopercular 

 edge. Snout conical, longer than eye, with lower jaw rather prominent. .Maxillary 

 reaches only to vertical from posterior margin of eye, aud is much dilated behind. Origin 

 of dorsal before root of ventral, nearer to extremity of snout than to root of caudal. 

 Pectoral tin long, extending nearly to vent. Posterior margin of each scale covered with 

 minute spines, but the margin itself is not serrated. 



Eadial formula: B. 9; D. 13; A. 13; V. 8; L. lat. 3 | .30 | 5. 



The type of this species is a single specimen, <J^ inches long, in the British Museum, 

 obtained off Madeira in January, 1803. The Albatro.sn obtained a specimen on February 11, 

 188.5, from station 2376, in 21P 03' 1.5" N. lat., 88° IG' W. Ion., at a depth of 324 fathoms. 

 The Blake obtained two specimens, one off Dominica, in 333 fathoms, and one from Sta- 

 tion XLii, oft" Martinique, in 357 fathoms. The French expedition obtained it from off the 

 coast of Morocco, 1,350 and 1,590 meters. The Investigator took it in the Indian Ocean in 

 188-220 fathoms. 



The color of the Albatross specimen, as noted immediately after capture by Dr. Bean, 

 was as follows: Grayish silver on sides, with narrow margins of claret red on the scales (or 

 scale impressions). All the fins with brick-red on membrane covering the rays. Iris, pale 

 gold. Preoperculum aud iuteropercle with narrow lines of red. Bone supporting bianchi- 

 ostegal rays with abroad iridescent band. Phosi)horescent sjjots on throat, also iridescent. 

 Each phosphorescent spot on lower surface pale gold, iridescent, and with a narrow, dark 

 brown margin posteriorly. Iris with a claret blotch or blotches. 



SCOPELENGYS, Alcock. 

 Scopelengys, AxcoCK, Aun. and Mag. Nat. Hist., 1890, n, 303. 



Head and body compressed. Eye small. Mouth very wide; the maxilla dilated behind. 

 Acute villiform teeth, in bands uncovered by the lips in the jaws, and in the palatines and 

 vomer. Gill openings very wide; gill covers comjilete. Pseudobranchi.'e rudimentary. 

 Dorsal fin near the middle of the body short; an adipose dorsal. Anal fin short. Caudal 

 forked. Pectorals well developed. Yentrals witli 8 rays. (Seale>*, if present, very decidu- 

 ous.) No air bladder, [pyloric ca?ca present in moderate number. 



The type is S. tristisj obtained by the Jnvistii/ator at station 104 in the Arabian Sea, 

 at a depth of 1,000 fathoms. 



NANNOBRACHIUM, Gunther. 



Nannolrachium, GOnther, Challenger Report, xxii, 1887, 199. (Type, X. nigrum, pi. m, fig. !>., from the 

 Indian Ocean, 500 fathoms.) 



Body elongate, compressed, with large deciduous scales. Mouth wide, with well devel- 

 oped maxillary, not dilated posteriorly. Teeth in jaws, on vomer, palatines, aud tongue in 

 narrow bands and very small. Eye moderate. Pectoral fins rudimentary. Yentrals normal, 

 8-rayed, inserted behind pectorals. Dorsal fin median, with 13 or 11 rays, its origin in the 

 interspace between ventral and anal. Anal moderate. Caudal forked or emarginate. Adi- 

 pose fin small, above end of anal. Gill openings extensive. Pseudobranchije small. Phos- 

 phorescent organs in rows along lower parts, and numerous others on the base of the tail, 

 above and below. 



