DISCUSSION OF SPFX'IES AND THEIR DISTKIBUTION. 



MEASUREMENTS. 



Extreme length 



Length to hase ol' uiiJilh- caudal ravs . 

 Body : 



Greatest height 



Greatest width 



1 leight at ventrals 



Least height of tail 



Head: 



Greatest length 



Greatest width . . 



Width of interorbital area 



Length of snout 



I^ength of upper jaw 



Length of manditlo 



Distance from snout to orbit 



Diameter of orbit 



Dorsal (first) : 



Distance from snoul 



Length of base 



Lengtli of longest ray 



Dorsal (second) : 



Length of base 



Length of first ray 



Length of longest ray 



MiUimetors. 



178 



IfiO 



1« 



32 



4 



33 



2n 



7 



7 



T5 



17 



;) 



11 



40 



9 



54 



105 

 14 



17 



Anal: 



Distance from snout 



LengUi of base , 



Leugl li of first ray 



Length of longest ray 



Lengtli of last ray , 



Caudal : Length of middle r;i 

 Pectoral : 



Distance from snout 



Length 



Ventrals : 



Distance from snout 



Length 



Branchiostegals 



Dorsal " 



Millimotors, 



Anal 



Cauda! 



roetoral 



Ventral 



Number of scales in lati ral line ("i. 



Number of transverse rowsabovc^ lateral line.. 

 Number of transverse rows below lateral line.. 



8(i 

 7 



in 



3 



18 



■Mi 



25 



30 



25 



VII 



5-{i3 



59 



19 



2 



110 



13 



31 



The BUde obtained (>xamplesof this sjiocies from station cccxxi, in 3-'^ 43' 25" N. lat., 

 77° 20' 30" W. Ion., at a depth of 23;; fathoms; from station cccxv, in 32° 18' 20" N. iat., 

 78° 43' W. Ion., at a depth of 225 fathoms; and from statiou cv.cxYl, in 32° 7' N. Iat., 78o 

 37' 30" W. hin., at a depth of 229 fathoms. A singh> specimen was also ol)tMined by tlie 

 FishHnwlc on October 10, 1S81 (Cat. Xo. 29040, U. S. Jf. M.), at statiou 1045, in 38° 35' N. 

 Iat., 73^ 13' W. Ion., at a depth of 31 2 fathoms. 



L^MONEXIA MELANURLTM, Goode and Beax, n. 



(Figure 310.) 



The specimen described, catalogue number 38270, is .3.'>0 millimeters in length; it was 

 obtained by the steamer Alhiitmss in N. hit. 30'^ 44', W. Ion., 79° 20', 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 eipial to twice the width of the interorbital sjtace. 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 (36 millimeter.s) is 

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

 more than twice 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 bead of the 

 bone. The barl)el (17 millimeters) is about as long as the snout. The di.stance 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 long as the lirst. 



The ventral cimsists of a single bitid ray; its distance from the tip of the snout is 

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

 dorsal 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) cipials that of the 

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

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

 (20 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 long as the 

 suout. 



Eadial formula: D. C,.57; A. 55; T. 25; Y. 2; Br. 7; Se. 10-100-38. 



