454 



DEEP-SEA FISHES OF THE ATLANTIC BASIN. 



total length of the body. The eyes are small, protruding, the npper almost ])erpeiulicularly 

 above, though perhaps slightly posterior to the lower. The diameter of the eye (2) equals 

 the width of the interorbital sjiace (2) and is double the distance (4) from tlie snout to the 

 upper eye, tluit from the snout to the lower eye (I?) being intermediate. The mouth is 

 small, the shape of the opening being somewhat like that in Solva, the upper jaw being 

 somewhat hook-shaped. The length of tlu^ upper jaw (4) is two-thirds that of the 

 mandible ((>). 



The dorsal commences ou tlie snout in advance of the eye, and is composed of 1»<> to 

 102 long, flexible, simple rays, their tips apparently extending far beyond the connecting 

 nieud)rane. The length of the longest rays (14) is double the least height of the body at 

 the base of the tail (7). 



The anal fin originates at a distance (22) from the snout contained four tinio and one- 

 half in the length of the body. It is composed of 70 to 81 rays, tlu^ longest of wliich are as 

 long as the head. 



The pectoral is inserted close to the gill opening and far below the lateral liiu^ (midway 

 from the black stripe n])on the lateral line to the black stripe at tlie base of the interspin- 

 ous processes of the aniil lin). The pectoral upon tlie blind side is short, its length (2) 

 equal to the diameter of the orbit, composed of about four or five rays; that uijon the col- 

 ored side longer, its length (3) eipial to that of the snout, and composed of about twelve 

 rays. The veiitrals are both crowded upon the ventral keel, tlieir bases prolonged upon 

 the keel, their tips embracing the origin of the anal. 



Radial formula: D. 90-102; A. 70-81; V. 12 left, 4-5 right. 



(Jolor: In life colorless, translucent. In alcohol yellowish white. Three prominent 

 blackish longitudinal stripes or lines upon the left side. The stripe running from the 

 branchial cleft to the base of the tail is less prominent than the two at the bases of the in- 

 terspinous processes. On the lateral line of the right side there is no stripe, though the 

 two lateral stripes are as prominent as lapon the other side. Eyes black. 



Cnrrent number of specimen . 

 Locality 



20, 005. 

 870, 87], aull 872. 



Milli- 

 meters. 



Extreme length 



Length to end of middle eaudal rays . . 

 Body : 



Greatest height 



Least height of tail 



Head : 



Greatest height 



Distance from snout to upper eye . 



Distance from snout to lower eye. . 



Width of interorbital area 



Length of maxillary 



Length of mandible 



Diameter of orbit 



Dorsal (spinous) : 



Distance from snout 



Greatest height 



Anal: 



Distance from snout 



Height .at longest ray 



Caudal length of middle'rays 



Pectoral: 



Distance from snout 



Length 



Ventral distance from snont 



Dorsal 



Anal 



Pectoral 



Number of scales in lateral line 



lOOths of 

 length. 



32 



7 



18 



4 



:i 

 2 

 4 

 



2 



2.5 

 14 



22 

 18 

 19 



18 



3-2 



Ifi 



110-102 



70-81 



! L.,4-5K. 



■120 



* Estimated from partial count. 



The type specimen of Monolene aessilicaudu (Cat. No. 20004, IT. S. N. M.), .150 meter 

 long, was taken by the Fifth IJoirk, together with 10 oth(;r specimens, from station S70, in 

 40C 02' :iO" N. hit., 70° 22' 58" W. ion., at a depth of 155 fathoms, and from stati<m 871, in 

 40O 02' 54" N. lat., 70° 23' 40" W. Ion., at a depth of 115 fathoms. Examples were also 



