DISCUSSION OF SPECIES AND THEIR DISTRIBUTION. 93 



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



Neoscopeliis mairolepidotus, Johnson, Proc. Zoiil. Soc, 1863, 44, j)l. 7; Alcock, Ann. and Mag. Nat. Hist., 



1891, II, 129. 

 Scopelas macrolepidotus, Gunthek, Cat. Fish. Brit. Mus., v, 1864, 414. 



Height 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, and equal to 

 width of interorbital space, aud 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, and is much dilated behind. Origin 

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

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

 minute spines, but the margin itself is not serrated. 



Radial formula: B. 9; U. i;5; A. 13; V. 8; L. lat. 3 | 30 | 5. 



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

 obtained oft" Madeira in January, 1863. Th& Albatrons obtained a specimen on February 11, 

 188.J, from station 2370, in 2!)o 03' 15" K hit., 88° 10' W. Ion., at a depth of 324 fathoms. 

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

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

 coast of Morocco, 1,350 and 1,500 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 briclv-red on membrane covering tbe rays. Iris, pale 

 gold. Preoperculum and interopercle with narrow lines of red. Bone supporting branchi- 

 ostegal rays with a broad iridescent band. Phosphorescent spots on throat, also iridescent. 

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

 bi'owu margin posteriorly. Iris with a claret blotch or blotches. 



SCOPELENGYS, Alcock. 

 Scopelengys, AxcoCK, Ann. and Mag. Nat. Hist., 1890, il, 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 complete. Pseudobranchise rudimentary. 

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

 forked. Pectorals well developed. Ventrals with 8 rays. (Scales, if present, very decidu- 

 ous.) No air bladder. Pyloric ca'ca present in moderate number. 



The type is <S'. tristls, obtained by the Investigator at station 104 in the Arabian Sea, 

 at a depth of 1,000 fathoms. 



NANNOBRACHIUM, Gunther. 



NannobracMum, GiJnther, Challenger Report, xxii, 1887, 199. (Type, JV. nigrum, pi. Lii, fig. b., 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, and tongue in 

 narrow bands aud very small. Eye moderate. Pectoral flns rudimentary. A'entrals normal, 

 Srayed, inserted behind pectorals. Dorsal fln median, with 13 or 14 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. Pseudobranchia? small. Phos- 

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

 above and below. 



