DISCUSSION OF SPECIES AXD THEIR DISTRIBUTION. 455 



obtained by tlie saiue vessel as follows: Cat. No. 2(i099, U. S. N. M., from station 870, in 

 390 57' N. hit., 700 5G' W. Ion., at a depth of 12(1 fathoms; Cat. No. 2(;i()9, U. S. N. M., 

 from station 877, in 38© .10' N. hit., 70© 54' IS" W. Ion., at a de])tli of 12fi fathoms; Cat! 

 No. 2C005, U. S. N. M., from station 871, in 40° 20' 54" N. hit., 7(P 23' 40" W. Ion. at a 

 depth of 115 fathoms; Cat. No. 2(i000, IT. S. N. M., fnmi station 872, in 40° 05' 39" N. lat., 

 70^ 23' 52" W. Ion., at a depth of SO futhoms; Cat. No. 28981, U. S. N. M., from station' 

 1038, in .39= 58' N. lat., 70"- 00' W. Ion., at a depth of 146 fathon.s; and Cat. No. 28740, U. 

 S. N. M., from station 923, in 40^ 01' N. lat., 70^ 40' W. Ion., at a dei)tb of 98 fatlioms. 



The B/rtAf took it from station xviii, oft' Barbadoes, at a depth of 209 fathoms; from 

 station CLXXV, off Allijiator Iv<'ys, at a depth of 85 fathoms; and from station C'ccxiv, iu 

 320 24' N. bit., 78^ 44' W. Ion., at a depth of 142 fatboms. Additional specimens were 

 seenred by the Athatrofis 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' ^\'. Ion., at a depth of 117 

 fathoms; from station 2378, in 29° 14' 30" N. lat., 88° 09' 30" W. Ion., at a dei)th of 08 

 fathoms; from station 2314, iu 32= 43' N. lat., 77= 51' W. Ion., at a depth of 1.59 fathoms; 

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

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

 2537, in 39= 50' 45" N. lat., 70= .50' 30" W. Ion., at a (lei)th of 150 fathoms; and from station 

 2545, iu 40= 01' N. lat., 70= 23' 45" W. Ion., at a deptli of 142 fatbom.s. 



MONOLENE ATKIMANA, Gooi.t; and Bean. (Figure 358.) 

 Moiiuleue tilrbitana, GoODE and Bean, Bull. JIns. Conip. Zoc'd., xii, 155. 



Height of the body (37) is one-third <>f tlie total length without the snout, and equals 

 4 times tbe long diameter of the eye; it also ecjuals Ij-j times the distance of the ventral 

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

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

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

 ing one-half the length of tbe eye. 



Scales ovate or oblong, smaller than in ^f. .sessilicauda, and without evident pectina- 

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

 The scaling of the fins is essentially tbe same as in M. sessilicduda. There are 30 rows of 

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



The lateral line of tbe colored side is strongly arched in its anterior pait over tbe base 

 and anterior third of the pectoral flu. Tbe arc of the curved portion of the lateral line 

 (10) equals 2i times the height of the curve (4). Tbe curve is entirely similar to that in 

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

 ing anteriorly. There are 105 scales in the lateral line to ('audal base, 18 of these iu the 

 curved portion. 



The length of the bead (24) equals two-ninths of the standard length, and 2:-; (imes the 

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

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

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

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

 its hind margin does not extend iinicb beyond the vertical through the front margin of the 

 lower eye. The length of the mandible (10) e(|Uals five-twelfths of the bead's length. The 

 teeth are uniserial and well developed on both sides. The nostrils are iu very short tubes, 

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

 from tbe lower eye than the anterior is from the tip of the .Miout. A concavity above the 

 snout. 



The dorsal fin begins upon tbe snout on tli<' blind side in the perpendicuhir through 

 the front of tbe 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. Tb(> anal fin begins between the 

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

 outline, but on tbe bliud side and close to tbe beginning of the anal fin. The anal is composed 



