DISCUSSION OF SPECIES AND TIII'III DISTRIBUTION. 469 



pressed spine; behind this on the snout another short spine. A short spine on the cheek 

 bone. Anterior nostril in a tube which is produced posteriorly into ;i little flap; posterior 

 nostril in a large shorter tnbe. The preopercular spine, also, has a short spine ;it its base. 

 Preocular and supraocular spines present. A pair of postocalar spines on each side, one in 

 front of the other. A pair of blunt spines on the occipul and another pair on the nape. 

 Length of opercular spine, measured back to the edge of the preopercie, equals the length 

 of the postorbitaJ part of the head. Humeral spine well developed, its length nearly equal 



to that of the preocular. The maxilla does not reach to the front of the eye, its length (11 



millimeters) being equal to the postorbital part of the head. The inaudible reaches about to 

 the vertical from the front of the eye: its length (is millimeters) nearly one-half the length 

 of the head. Teeth in narrow villiform hands in the jaws and on the vomer and palate. 

 Bight developed gill rakers on the anterior arch. The longest about one-third as long as the 

 eye; live rudiments below and two above the developed rakers of the anterior arch; these 

 are mere tubercles scarcely raised above the general surface. The length of the eye (it milli- 

 meters) is one-half the length of the snout and nearly one-fourth the length of the head. 

 The snout (is millimeters) is equal to twice the length of the eye and equals the length of 

 the mandible. The distance of the dorsal from the tip of the snout (41' millimeters) is a little 

 greater than the length of the head. The length of the base of the spinous dorsal (26 

 millimeters) nearly three limes the length ot the eye. The first spine is serrated on its 

 anterior margin for the greater portion of its height; it is nearly as long as the second, its 

 length (Hi millimeters) is two tilths the length of the head; the third spine is the longest, its 

 length (20 millimeters) is one half the length of the head. The last two spines are very 

 small. The third spine, also, is serrated along its anterior margin for the greater portion of 

 its height. There is a very slight interspace between the t wo dorsals. The length of the 

 fast ray of the soft dorsal (16 millimeters) equals that of the second spine of the dorsal; the 

 length of the last ray (13 millimeters) equals one half of the length of the spinous dorsal 

 base, 'flic length of the middle caudal rays (27 millimeters) equals three times the length of 

 the eye. The caudal is .■-lightly emarginate. The origin of the anal is immediately under 

 the origin of the soft dorsal. The length of the anal base (.">2 millimeters) is one-half the 

 distance of the anal from the tip of the snout. The spine is only about two-thirds as long 

 as the first ray; its length (7 millimeters) is one-hall' tin' length of the maxilla. The length 

 of the longest anal ray (12 millimeters) is one-half the length of the spinous dorsal base. 

 The ventral extends to the origin of the anal; its length (33 millimeters) equal to the anal 

 base. The pectoral when extended reaches to the line connecting the tilth ray of the dorsal 

 with the sixth ray of the anal. This tin is emarginate behind; its longest ray is slightly 

 longer than the head and more than twice as long as the longest dorsal spine. 



Radial formula: D. x, 12; A. i. 1<»; 1'. 13 + 3; V. r,5. 



The type of the description is a specimen 112 millimeters long to base of caudal. Its 

 catalogue number is 39318, from station 2120, steamer A Ibatross, N. lat., 11° 07' W. Ion., 

 62° 14' 30", from 7.; fathoms, off Trinidad. 



Seven rows of scales between the lateral line and origin of the second dorsal: lit rows 

 between lateral line and origin of anal; ■">(> pores in the lateral line, and about 93 oblique rows 

 of scales can be counted. .Scales on the breast conspicuously smaller than the others. 



Colors of the alcoholic specimen, light yellowish brown above, lighter below. The spi- 

 nous dorsal has a black blotch between the fourth and fifth spines, its length about two 

 thirds that of the eye. The membrane connecting the spines of the dorsal with faint 

 dusky shades in several places. Membrane connecting the last three or four rays of the 

 second dorsal slightly dusky. The pectoral with two broad dark areas, separated and 



surrounded by lighter. The dark markings on the pectoral do not take the for f bands. 



and have their greatest length nearly parallel with the axis of the fish. 



