DISCUSSION OF SI'ECIES AND THEIR DISTRIBUTION. 



MEASUREMENTS. 



MiUimetera. 



Ext irme length l'?8 



Length to base of midilkt caudal rays 160 



Hody : 



Greatest height 36 



Greatest wiiltli 



Height at ventrals 



Least height of tail 



Head: 



Greatest length 



Greatest width 



Width of interorbital area... 



Length of snout 



Length of upper jaw 



Length of mandible 



Distance from snout to orbit. 



Diameter of orbit 



Dorsal (first) : 



Distance from snout 



Length of base 



Length of longest ray 



Dorsal (second) : 



Length of base 



Length of first ray 



Length of longest ray 



18 



32 



4 



33 



20 



7 



7 



15 



17 



9 



11 



40 



9 



54 



105 

 14 

 17 



Millimeters. 

 Anal: 



Distance from snout (S 



Length of liase 86 



Length of lirst ray 7 



Length of longest ray 16 



Length of last ray 3 



Caudal: Length of middle rays 18 



Pectoral : 



Distance from snout 36 



Length - - - 25 



Ventrals : 



Distance from snout 30 



Length 25 



Branch! ostegals VII 



Dorsal 5-(;3 



Anal 59 



Caudal 



Pectoral 19 



Ventral 2 



Number of scales in hit. ral line ca. 140 



Number of transverse rows above lateral line.. 13 



Number of transverse rows below lateral line . . 31 



The Bhde obtained examples of tbi.s species from .station rccxxi, in 32° 43' 25" K lat., 

 77° 20' 30" W. Ion., at a depth of 2.33 fathoms; from station cocxv, in 32° IS' 20" N. hit., 

 78° 43' W. Ion., at a depth of 225 fathoms; and from station cccxvi, in 32° 7' N. hit., 78° 

 .')7' .30" W. h)n., at a depth of 229 fathoms. A single specimen was also obtained by the 

 Fi.sh Hnich on October 10, ISSl (Cat. No. 2904G, U. S. N. M.), at station 104.5, in 38^ 35' N. 

 lat., 730 13' W. Ion., at a depth of 312 fathoms. 



L^MONEMA MELANURUM, Goode and Bean, n. s. (Figure 316.) 



The specimen described, catalogue number 38270, is 330 millimeters in length; it was 

 obtained by the steamer Albatross in N. lat. 30° 44', W. Ion., 79° 26', station 2415, in 440 

 fathoms. 



The greatest depth of the body (105 millimeters) is contained 4§ times in the length 

 without caudal. The length of the head (08 millimeters) is slightly more than the greatest 

 height of the body. The eye is very large, its length (25 millimeters) about one-third the 

 length of the head and equal to twice the width of the interorbital space. The length of 

 the snout (18 millimeters) is about one-fourth the length of the head. The maxilla ex- 

 tends to below the middle of the eye. The length of the intermaxilla (30 miUimeters) is 

 nearly one-half the length of the head. The length of the mandible (38 millimeters) is slightly 

 more than t\vice the length of the snout. Teeth in the Intermaxilla and mandible in villi- 

 form bands. Vomerine teeth in a small circular patch on the middle of the head of the 

 bone. The barUel (17 niilliiiu'ters) is about as long as the snout. The distance of the first 

 dorsal from the tip of the snout is about 4 times the length of the snout. The length of 

 the first ray of the dorsal (54 millimeters) equals that of the head without the snout; the 

 last ray is scarcely more than one-fourth as loug as the first. 



The ventral consists of a single bifid ray; its distance from the tip of the snout is 

 equal to the length of the head; its length (52 millimeters) is nearly equal to that of the 

 doisiil and the pectoral when extended. It does not reach the vent by a distance equal to 

 the length of the snout. The length of the pectoral (54 millimeters) equals that of tht; 

 longest dorsal ray, and also equals the head without the snout. The second dorsal is higher 

 anteriorly, and posteriorly much higher, than it is in the middle; the longest anterior ray 

 (2(; millimeters) is one-half the length of the ventral, the longest posterior ray (.30 

 millimeters) being one-half the length of the head. The vent is under the eighth ray of 

 the second dorsal. Gill-rakers 5+15; the longest (4 millimeters) one-fourth as loug as the 

 snout. 



Radial f..iimtla: 1). 0,57; A. 55; P. 25; V. 2; Br. 7; Sc. 10-100-38. 



