DISCUSSION OP SPECIES AND THEIR DISTRIBUTION. 69 



directly opposite the anal, which it resembles in shape and size. Caudal peduncle short and 

 slender. Yentrals absent. Pectorals broad and short, i)laced low. Caudal small, weak, 

 probably euiarj;mate or trimcate. Lateral Hue broad, cousistiuji' of two furrows connected 

 vertically by numerous short cross grooves. 



CETOMIMUS GILLII, Goode and 1!kan, ii. s. (Figure 78.) 



The height of the body is a little less than one-fourth of the total length ; length of 

 head a little less than one-third. Eye minute; contained about 23 times in length of head, 

 and about S times in that of snout; inserted midway between the margin ofthejawaiidthe 

 dorsal profile, distant from the former a space contained about 2i times in the length of the 

 snout. The maxillary reaches very f;ir back, extending to a point behind the orbit equal to 

 1 J times the length of the snout. The origin of the dorsal is directly above that of the anal, 

 which is inserted a short distance behind the vent; distance ft-om the snout equal to more 

 than 4 times the length of its own base, and the distance of its termination from the root 

 of the upper rays of the caudal equal to its own greatest height. The anal fin is similar in 

 shape and extent to the dorsal, but has the thirteenth to the fifteenth rays the longest, 

 while the eighth to the eleventh are tlie longest in the dorsal. The length of these longest 

 rays is about equal in the two fins, and is contained slightly less than 3 times in the 

 length of the head. The pectoral fin is inserted somewhat below the middle of the body 

 and close to the extremity of the opercular flap. It is broadly lanceolate, and its length is 

 contained about 3^ times in that of the head. Ventrals lackin g. Color, blue-black. The 

 lateral line sweeps in a bold curve fiom a point above the upper angle of the gill opening 

 to a i)oiiit in the middle of the body between the origin of the dorsal and anal fins, and 

 thence in a straight median line to the base of the caudal. 



Radial formula: B. 'J; D. 16; A. 16; P. 16. 



A single specimen (No. 35529, U. S. N. M.), 5 inches in length, was taken by the Alba- 

 tross, August 20, 1884, at station 2206, in 39° 35' N. lat., 71° 24' 30" W. Ion. at the depth of 

 1,043 fathoms. 



CETOMIMUS STORERI, Godi.E and Bean, ii. s. (Figure 79.) 



The height of the body is a little more than one-fourth of the total length; the length 

 of the head is contained 3J in that of the body. Diameter of the eye contained about 18 

 times in the length of the head, and about 7 times in that of the snout, the eye being inserted 

 nearer to the dorsal profile than to the jaw, its position in the vertical being twice as far 

 from the line of the upper jaw as from the dorsal line; it is nearly in the line of the vertical 

 erected from the middle of the upper jaw to the right angles of its edge. The lower jaw is 

 strongly curved, and i)rojects far beyond thd' upper. The origin of the dorsal fin is a little 

 in advance of that of the anal, whicli is inserted at a distance from the vent equal to 3 or 4 

 times the diameter of the eye. The dorsal fin is longer than the anal, the termination of 

 the latter being under tht^ fifth ray from the end of the dorsal. They are about c(iuiil in lieight, 

 and the direction of the rays when erected is backward and at an acute angle with the axis 

 of the body. The longest rays are contained about 2i times in the length of the head. 

 Pectoral fin is inserted very far doM-n, the lower jiortion of its peduncle almost on the 

 abdominal line; the fin is lanceolate, and, although nuitilated, is believed to have been about 

 half as long as the head. The lateral line SAveeps in a sinuous curve from a poiiit above the 

 upper angle of the gill opening to a point somewhat in advance of the insertion of the 

 dorsal, and thence in a straight line to the liase of the caudal. A line of mucous pores on 

 either side of the median dorsal line in advance of the dorsal fin. 



Radial formula: D. 19; A. 16. 



A single specimen (No. 35634, TJ. S. N. M.), 4^ iiu'hes in length, was taken by the Fish 

 Commission steamer Albatross at station 2222, on September 6, 1884. in 39° 03' 15" N. lat., 

 70" 50' 45" W. Ion., at a deptli of 1,535 fathoms. 



This species is provisionally described from a carefid drawing made by INIrs. Ililde- 

 brandt, December 11, 1SS4, under tlu^ criticism of Dr. Beau, the tj-i)e specimen being inac- 

 cessible at the time this study is made. 



