424 DEEP-SEA FISHES OF THE ATLANTIC BASIN. 



Scales small, (U'ciduoiis,' as nearly as can be counted 25 rows in an obliiinc lino from 

 the vent to the dorsal fin, 24 from the upper angle of operculum to the vertical tlirough the 

 origin of the anal. 



Length of head (55 millimeters) contained 5^ times in total length. Interorbital area 

 nearly Hat, its width contained 4 times in length of head. Postorbital part of head (26 milli- 

 meters) somewhat longer than diameter of eye, whicli is nearly round, its length (20 milli 

 meters) contained 2| times in length of head. Snout broad, obtuse, its length (11 millimeters) 

 contained 5 times in that of the head. Nostrils close to the eye, the posterior nearly twice 

 as large as the anterior one. The maxilla extends to the vertical through posterior margin 

 of orbit, its length (.30 millimeters) equal to that of head without its postorbital portion. 

 Length of mandible (34 millimeters) equals 3 times that of the snout. Intermaxillaries and 

 mandible provided with narrow bands of villiform teeth, those in the mandible much 

 shorter. 



A minute barbel, about one-third as long as snout. Vomer and palate toothless. 



Gill-rakers lanceolate, elongate, 26 on first arch, 7 above the angle, the longest one- 

 seventh as long as the head. Pseudobranchiie absent. The first dorsal consists of 2 short 

 spines and 8 branched rays, its distance from snout (02 millimeters) contained nearly 5 times 

 in the total length. The second or longest ray in the typical specimen twice the length of 

 snout. The second dorsal, which contains about 125 rays, is almost continuous with the 

 first, its anterior rays the longest, about 4 times in length of head. 



The anal is inserted under the fourteenth ray of second dorsal. Its rays are all very 

 short. In a distance equal to length of head, counting back from insertion, there are 33 rays. 



The pectoral is inserted under the first branched ray of the first dorsal; its length in 

 the most nearly perfect specimens equals the length of the head without the snout. 



The ventral origin very slightly behind origin of pectoral under the third branched ray of 

 thedorsal, reaching nearly to the vent when laid back. Its length (35 millimeters) equaling 

 three times that of snout. Rays 8. Branchiostegals 7. 



Coloi', yellowish gray, lighter below. 



The type specimen (Cat. No. 37339, U. S. N. M.), 305 millimeters in length, was taken 

 by the Albatross from station 2396, in 28° 34' N. lat., Sd''^ 48' W. Ion., at a depth of 335 fathoms. 

 The Albatross also obtained examples from station 2395, in 28° 36' 15" N. lat., 86° 50' W. 

 Ion., at a depth of 347 fothoms; and from station 2376, in 29° 03' 15" K lat., 88o 16' W. Ion., 

 at a depth of 324 fathoms. The Blalc captured a single indi\idual at station CCLVI, in 28° 

 42' N. lat., 880 40' W. Ion., at a depth of 321 fathoms. 



BATHY(;ADUS MELANOBEANCHUS, Vaillant. 

 Bathygadiis meJanohranchiis, Vaiixant, Exp. Sci. Tr.ivnillt'ur ot Talisman, 1888, 20C, pi. xviii, fiR. 1. 



Body compressed, its greatest height (at ventrals) one-seventh of its length; its thick- 

 ness one-eleventh of same. Length of head one-fifth of total. Sntmt blunt, its length one- 

 fourth that of head. Mouth large, the maxillary extending to or beyond vertical from 

 center of eye. Eye large, as long as snout; interorbital space very slightly less. No barbel. 



Scales cycloid, unarmed, in about 24 horizontal and 140 transverse rows. 



Distance of first dorsal from snout less than five times in the length of the specimen. 

 Length of its second ray nearly twice that of snout. Secoiul dorsal with 102 rays, nearly 

 continuous with the first. 



Anal inserted under the ninth ray of second dorsal (in II. mao-ops under the fourteenth). 

 Its rays are short (one-half diameter of eye), rather far apart; in a space equal to the length 

 of the head, counting backward from the insertion, there are 20 (33 in />. macrops). 



Pectoral inserted under the first branched ray of the dorsal ; its length ccpnil to dis- 

 tance from center of eye to gill cleft. 



Ventral base entirely in advance of vertical from origin of dorsal, and so far in advance 



' Not one of our specimenshas scales, so their character can not be made out, nor can the lateral line be 

 described. 



