DISCUSSION OF SPECIES AND THEIR DISTRIBUTION. 455 



obtained by tlie same vessel as follows: Cat. No. 2C099, U. S. N. M., from station 876, in 

 390 57' N. lat., 70° 50' W. Ion., at a (lei)tli of 120 fathoms; Cat. No. 2()l()9, U. S. N. M., 

 from station 877, in 38° .10' N. lat., 70° 54' IS" W. Ion., at a depth of 120 lathoms; Cat. 

 No. 20005, U. S. N. M., from station 871, in 40° 20' 54" N. lat., 70° 23' 40" W. Ion., at a 

 deptli of 115 fathoms; Cat. No. 20000, U. S. N. JF., from station 872, in 40° 05' 39" N. lat., 



70° 23' 52" W. Ion., at a depth (.f SO lath s; Cat. No. 28981, U. S. N. M., from station 



1038, in 39° 58' N. lat., 70° 00' W. Ion., at a dei)th of 140 fathoms; and Cat. No. 28740, IT. 

 S. N. M., from station 923, in 40° 01' N. lat., 70° 40' W. Ion., at a depth of 98 fathoms. 



The Blahf took it from station xviii, off Barbadoes, at a depth of 209 fathoms; from 

 station CLXXV, off Allig^ator Keys, at a depth of 85 fathoms; and from station cccxiv, in 

 32° 24' N. lat., 78° 44' W. Ion., at a depth of 142 fathoms. Additional speennens were 

 secnred by the AUmtrons from station 2402, in 28° 30' N. lat., 85° 33' 30" W. Ion., at a depth 

 of 111 fathoms; from station 2091, in 40° 01' 50" N. lat., 70° 59' W. Ion., at a depth of 117 

 fivthoms; from station 2378, in 29° 14' 30" N. lat., 88° 09' 30" W. Ion., at a depth of 68 

 fathoms; from station 2314, in 32° 43' N. lat., 77° 51' W. Ion., at a depth of 159 fathoms; 

 from station 2423, in 37° 10' 15" N. lat., 74° 32' W. Ion., at a depth of 143 fathoms; from 

 station 2552, in 39° 47' 07" N. lat., 70° 35' W. Ion., at a depth of 721 fathoms; from station 

 2537, in 39° 50' 45" N. lat., 70° 50' 30" W. Ion., at a depth of 150 fathoms; and from station 

 2545, in 40° 01' N. lat., 70° 23' 45" W. Ion., at a depth of 142 fathom.s. 



MONOLENE ATRIMANA, Goode and Bean. (Figure 358.) 

 Muiiiiliiic ntriiiiiniti, (iooDE and Bean, Bull. Mus. Conip. Zi)ii!., xii, 155. 



Ueight of the body (37) is one-third ()f the total leno'th without the snont, and equals 

 4 times the long diameter of the eye; it also equals I'rJ times the distance of the ventral 

 origin from the snout. The height at the origin of the ventrals (29) equals about 3 times 

 the length of the lower eye (9). The least height at the base of the tail (8) equals four- 

 fifths of the length of the mandible (10). The body is thin, its greatest width (4i) equal- 

 ing one-half the length of the eye. 



Scales ovate or oblong, smaller than in M. scsnilicauda, and without evident pectina- 

 tions. The head is everywhere scaly except on the lips and the anterior half of the snout. 

 The scaling of the fins is essentially the same as in 71/. s-essiiicauda. There are 30 rows of 

 scales above, and 32 below the lateral line on the colored side. 



The lateral line of the colored side is strongly arched in its anterior part over the base 

 and anterior third of tiie pectoral fin. Tlie arc of the curved jiovtion of the lateral line 

 (10) eipxals 2J times the height of the cuivc (4). The curve is entirely similar to that in 

 M. sessilicauda. The lateral line of the blind side is nearly straight, very slightly ascend- 

 ing anteriorly. There are 105 scales in flic Intcial lino to caudal base, 18 of these in the 

 curved portion. 



The length of the head (24) equals two-ninths of the standard length, and 2§ times the 

 diameter of the eye. The distance from the snont to the front of the upper eye (0) is much 

 greater than the distance to the lower eye (3). The interorbital area is a mere narrow 

 ridge, whose width (1) equals only one ninth of the length of the eye. The length of the 

 maxilla (8) equals one-third the length of (he head, and on account of its oblique position 

 its hind margin does not extenil much beyond the vertical through the front margin of the 

 lower eye. The length of the mandible (10) equals five-twelfths of the head's length. The 

 teeth are uniserial and well develojied on both sides. The nostrils are in very short tubes, 

 in the same line with the interorbital ridge, the jtosterior one being slightly less distant 

 from the lower eye than the anterior is ti'om th(^ tip of tlr(> snout. A concavity above the 

 snout. 



The dorsal fin begins upon the snout on the blind side in the ])crpendicular through 

 the front of tlie lower eye. It contains 124 simple rays, the longest rays being in the pos- 

 terior fourth of the fin, and one-half as long as the head. The anal tin begins between the 

 tips of the ventrals and under the origin of the pectoral. The vent is not on the ventral 

 outline, but on theblindsideand clo.se to the beginningoftheanal tin. The anal is composed 



