454 



DEEP-SEA FISHES OF THE ATLANTIC BASIN. 



total loiigtli of llie body. Tlie eyes are small, protruding, the Tip])er almost perpeiidicxilarly 

 above, though perhaps slightly i)osterior to the lower. The diameter of the eye (2) etjuals 

 the width of the iiiterorbital space (2) and is double the distance (4) from the snout to the 

 u])])('r eye, that fiom the snout to the lower eye (3) being intermediate. Tin* month is 

 small, the shajjc of the opening being somewhat like that in >Soh((, the upper jaw being 

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

 mandible (0). 



Tlie dorsal commences on the snout in advance of tlie eye, and is composed of 96 to 

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

 membrane. The length of the hmgest rays (14) is double the least height of the body at 

 the base of the tail (7). 



The aual tin originates at a distance (22) from the snout contained four times and one- 

 half in the length of the body. It is composed of 76 to 81 rays, the longest of which are as 

 long as the head. 



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

 from the black stripe Tipon the lateral line to the black stripe at the base of the interspin- 

 ous processes of the anal fin). The pectoral upon the blind side is short, its length (2) 

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

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

 rays. The ventrals are both crowded upon the ^-entral keel, their bases prolonged upon 

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



Radial fornuila: D. 96-102; A. 76-81; P. 12 left, 4-5 right. 



Color: In life colorless, translucent. In alcohol yellowisli white. Three prominent 

 blackish longitudinal stripes or lines upon the left side. The stripe running fnun 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 upon the other side. Eyes black. 



Current uumber of specimen 

 Locality 



26, 005. 

 870, 871, and 872. 



Milli- 

 meters. 



Extreme length 



Length to end of middle caudal rays . . 

 Body: 



Greatest height 



Least height of tail 



Head : 



Greatest lieight 



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. 



100 



32 



7 



18 

 4 



a 



2 

 4 



e 



2 



2.5 

 14 



22 

 18 

 19 



18 



3-2 



16 



90-102 



70-81 



: L.,4-5K. 



•120 



' Estimated from partial count. 



The type s])ecimen of Monolcne sessUicauda (Cat. No. 26004, IT. S. N. AL), .ir>6 meter 

 long, was taken by the Fixh Hairl, together with 10 other specimens, from station 870, in 

 40^ 02' W N. hit., 70'= 22' 58" W. Ion., at a depth of 1.55 fathoms, and from station 871, in 

 400 02' 54" N. lat., 70° 23' 40" W. Ion., at a depth of 115 fathoms. Examples were also 



