546 NEW FISHES FROM PACIFIC COAST GILBERT. 



Lt)\verja\v not i)rodiiced, shorter than the upper, and fitting well 

 within it. 



Eye snialler, 4;^ in head. Pectoral larger, If times orbit. 



Body compressed, elongate, the depth 4§ to 5 in length; head 3 to 

 34. Symphysis of lower jaw produced downwards and forwards to 

 lorni a short sharp point. Mouth moderately oblique, the maxillary 

 reaching vertical behind front of pupil, its length (measured from tij) 

 of snout) 2f in head. Mandible 2^ to 2^ in bead, 1^ to If times length 

 of snout. 



Teeth in single series in premaxillaries, mandibles, and palatines. 

 The lower jaw is well included, and its teeth shut between the series 

 on premaxillaries and that on the pahitines. 



Snout short and compressed, 3f in head. Eye moderate, nearly as 

 long as snout, 4^ in head. Interorbital space nearly flat, with a low 

 rounded ridge above each eye. The width above middle of orbit is 

 contained 1| times in diameter of eye. Preopercle with margin more 

 or less free, marked with radiating stritie. 



Dorsal tin beginning and ending a trifle in advance of the anal, the 

 bases of the two fins equal Distance from front of dorsal to base of 

 median caudal rays equals one-third length of body. 



D. 17; A. 17; V. 7; P. 10. . 



Pectorals long, 2^ in head, much longer than eye. 



Distance of ventral fins from head equals length of head behind 

 pupil. 



Scales small, in about 90 cross-series ; 16 scales between lateral line 

 and front of dorsal and anal respectively. Scales of lateral line much 

 enlarged, 55 in number, the tube forming a conspicuous raised ridge. 

 Dorsal and anal scaled for one-third their height. 



Color uniform blue-black. 



Numerous specimens from Stations 2839, 2il23, 2936, and 2980, in 

 depths of 359 to 822 fathoms. 



9. Porogadus promelas sp. nov. 



Closely resembling Porogadus gracilis GUnther, but differing in the 

 following respects : 



Depth 3 in trunk (in gracilis 3^). 



Eye G in head (in gracilis 5|). 



Vomerine patch of teeth with the two arms incurved (U-shaped in 

 gracilis). 



Dorsal fin beginning behind the i^ectoral (over root of pec;toral in 

 gracilis). 



An additional series of large scales (lateral line) along middle of sides, 

 and anotlier along ventral outline. 



Trunk 2:\ in tail (2^ in gracilis). 



Ventrals shorter, not reaching past tips of pectorals. 



