312 DEEP-SEA PISHES OF THE ATLANTIC BASIN. 



N. M., from station 1143, iu 31)^ 20' N. lat., 72° 01' W. Ion., at a deptli of 452 fathoms; Cat. 

 No. 29076, U. S. N. M., from station 1049, in 38° 28' N. lat., 73° 22' W. Ion., at a depth of 435 

 fathoms; Cat. No. 31703, U. S. N. M., from station 1140, in 39'^ 34' N. hit., 71° 50' W. lim. at 

 depth of 374 fathoms; Cat. No. 28700, U. S. N. M., from station 937, in 39° 49' 25' N. hit. 

 69° 49' W. lou., at a depth of 506 fathoms; Cat. No. 28929, U. S. N. M., from station 1028, 

 in 30° 57' N. hit., 09o 17' W. Ion., at a deptli of 410 fiithoins, and Cat. No. 28953, U. S. N. M., 

 from station 1029, in 39° 57' 00" N. lat., 09° 16' W. Ion., at a depth of 458 fathoms. 



LYCODONUS, Goode and Bean. 



Lycodonut, Goode and Bean, Bull. Mus. Comp. Zool., x, No. 5, 208. — Gunther, Cliallcnger Report, xxii, 



1887, 81. 



Lycodoids with body blenniform, elongate. Scales small, circnlar, imbedded in the skin. 

 Lateral line very short, posteriorly obsolete. Eye moderate. Jaws withont fringes. Upper 

 jaw longer than lower. Fin rays soft, artieulated; those of the doi'sal and anal fins sup- 

 ported laterally, each by a pair of sculptured ectodermal scutes or plates. Caudal distinct, 

 not fully connate with dorsal and anal, few-rayed. Ventrals present, jugular, each com- 

 posed of a few slender, deeply cleft, articulated I'ays. Gill opening rather narrow. 

 Branchiostegal membranes broadly joiTied to the isthmus. Teeth as in i^corfe.s. Pseudo- 

 branchiiB, apparently present. Branchiostegals apparently 5. Gill arches 4. Gill-rakers 

 rudimentary, in moderate number. Air bladder and pyloric cicca apparently absent. 



This genus is in nearly every particular like Lycoilcs, from which, however, it is dis- 

 tinguished by the peculiar structure of the dorsal and anal fins. 



LYCODONUS MIRABILIS, Goode and Bean. (Figure 280.) 

 Lycodonm mirdbilis, Goode and Bean, Bull. Mus. Comp. Zool., 1883, x. No. 5, 208, 209. 



The body is shai)ed much as in Lycencliclyx YcrnllU; its greatest height, at origin of dorsal, 

 contained about 18 times in the length of the body. Scales as in Lycodcs, the scales not 

 extending out upon the fins. The head and nape are also scaleless. Lateral line appar- 

 ently obsolete posteriorly, not extending back of the extremity of the pectoral. 



The length of the head is contained about 7 times in the entire length. The diameter 

 of the eye is contained 2 J times in the length of the head, and is about equal to the postor- 

 bital portion of the head. The eye is placed high, the width of the interorbital space 

 being less than the diameter of the pupil, and contained 3i times in the long diameter of 

 the eye. Nostrils immediately in front of the eye. The maxilla extends to the vertical 

 throngh the anterior margin of the pupil; the mandible, to a little behind the vertical 

 through the posterior margin of the pupil. 



The dorsal fin is inserted slightly behind the vertical through the base of the pectoral; 

 the portion of the fin present in the mutilated specimen before us contains 80 articulated 

 rays. The first 10 or 11 scutes do not support rays, but whether rays were originally present 

 or not can not be ascertained. The longest dorsal ray is about equal to the longest anal 

 ray, its length being contained about 3 times in that of the head. The distance of the 

 vent from the snout is twice the length of the head; the anal begins immediately behind 

 the vent; it consists at present of about 70 articulated rays. The caudal rays extend be- 

 yond the tips of the ultimate dorsal and anal rays; they are alxmt 9 in numbei'. 



The distance of the ventral from the snout is equal to twice the length of the upper jaw; 

 middle ventral ray is the longest, it being half as long as the postorbital part of the head. 



The lengtli of the pectoral ec[unls three times that of the snout. 



Radial formula: D. 80+ ; A. 70+ ; C. 9; P. 18; V. 3. 



A single mutilated specimen, measuring 112 milliuKsters in its imperfec^t condition, was 

 taken by the Blale from station cccxxxviT, in 38° 20' .08" N. lat., 73° 23' 2(»" \V. long., at a 

 dei)th of 740 latlioms. The tI Zfca^ross also obtained examples from station 2110, in 35° 45' 23" 

 N. lat., 74° 31' 25" W. long., at a ilepth of 8SS fathoms; from station 2205, in 39^ 35' N. lat., 

 71° 18' 45" W. long., at a depth of 1,073 fatlionis; from station 2083, in 40° 26' 40" N. lat., 

 67° 05' 15" W. long., at a depth of 959 fathoms; from station 2115, in 35° 49' 30" N. lat., 74° 



