382 DEEP-SEA FISHES OF THE ATLANTIC BASIN. 



normal; tlic supraiiiaxilhuy eud.s imder (he posterior margin of Uiv iiui)il. Tlie teeth are 

 ill a narrow band in hoth jaws and some of those at least in the outer row of njiper jaw are 

 slifiiitl.v enhirgeil and brownish colored. The teeth of the vomer form a short eurved band in 

 two rows. The nasal barliel about ccjuals the diameter of the eye. The chin barbel is 

 small and docs not much exceed one-half the diameter of the eye. 



Tllt^ foremost ray of tlie first dorsal springs from the back above opercular mai.nin. 

 Tlie second dorsal tin is low in front but rises rapidly to the seventh or eightli rays. beliiud 

 which it is nearly uniform for a long distance and the higliest at posterior portion. 



Tiie anal fin is much lower than the second dorsal. The caudal is slightly eniarginate, 

 almost truncate l)ehind, and its median rays are about two-thirds as long as the head. 



The pectorals are nearly three-fourths as long as head and are produced toward the 

 upMer angles, tlie third ray being longest. 



The ventral tins have their basis mostly in a-dvance of the pectorals, and the longest 

 ray is filamentous and nearly equals the pectoral. 



The lateral line is obsolescent. 



Thi', Albatross ohtMnad specimens of this species from the following localities: ("at. 

 No. 334;}0, LT. S. N. M., from station 2072, in 41o 53' N. Lit., 65° 35' W. lou., at a depth of 

 85S fathoms; Cat. No. 35G00, U. S. N. M., from station 2206, in 39o 35' N. lat., 71° 24' 30" 

 W. Ion., at a dei>th of l,(»4o fathRms; Oat. No. 332t»7, U. S. N. M., from station 2051, in 39° 

 41' N. lat., Gt)o 20' W. Ion., at a depth of 1,100 fathoms, and from station 2550, in 39° 44' 30" 

 N. lat., 70° 30' 45" W. Ion., at a depth of 1,081 fathoms. 



ONOS MACROPHTHALMUS, Gunther. 



Moliila mneroplhalma, Guntueu, Aim. ami Mag. Nat. Hist., 1867, XX, 280, pi. v., fig. B. 

 OiiKs macroplillmlmits, GrNTiiKR. Cliallenger Report, xxii, %. — C'ollett, Bull. Soc. Zixjl. France, xv, 1800, 

 108; Vid. Selslv. Forhandl., 1891, No. 11. 



"Barbels, three. The length of the head is one-fourth of the total (without caudal). 

 The diameter of the eye is one-fourth of the length of the head, as long as the snout, and 

 much longer than the iuterorbital space is wide. The maxillary reaches the hind mar- 

 gin of the orbit. Both jaws with teeth unequal in size, some being enlarged and canine- 

 like. Vent nearer to the snout than to the end of the anal. The anterior ray of the first 

 dorsal about as long as the eye." 



Radial formula: D. 55; A. 55; P. 17; V. 5. Back with narrow brownish crossbars. 



This species is known only from a single example, 3 inches long, obtained in 80 or 90 

 fathoms, near the Hebrides. Dr. Llitkeii gives it as his opinion that this represents the 

 young of ilotella mediterninea, but this view is disproved essentially by Collett. 



ONOS BISCAYENSIS, Collett. 



Onus hiscayensis, Collett, Bull. Sw. Zoiil. France, xv, 1890, 107. — Vid. Selsk. Forhandl., Christiania, 1891, 

 No. 11. 



Body elongate, its height 9 times or a little more in its length; head small, 5| in total, 

 4^ in total without caudal. Height of caudal iieduiicle 4 times in length of head. Eye 

 large, its diameter 3i| in length of head, exceeding in length the width of the iuterorbital 

 space, the length of the snout, and that of the first dorsal. Barbels, 3 (two nasal, one man- 

 dibular). 



Vent neari^r to the tip of the snout than to the extremity of the anal by a space ecpial 

 to the length of the snout. 



Base of first dorsal twice in length of head and a little longer than distance of its origin 

 from snout. Pectoral reaches nearly to origin of second dorsal. 



Intermaxillary teeth in bands, a single iirominent canine on each side. 



Color, brownish; second dorsal and caudal with brown bands. 



liadial formula: D. 54; A. 44; P. 17; 1>. (i. 



