no. 2075. FISHES FROM SOUTHERN CALIFORNIA— GILBERT. 319 



Dorsal 14, the last ray cleft to base; anal 18, the last ray divided; 

 pectoral 12; ventral 9, the outer ray a short simple rudiment. 

 Lower caudal lobe preceded by 7 inarticulate, spine-like rays, upper 

 lobe with 6. Thirty-eight scales in lateral line, the 18th covering the 

 upper supraanal photophore, the 26th scale covering the posterolateral. 



Elongate, with deep compressed caudal peduncle, the latter of nearly 

 equal depth throughout; mouth oblique, the maxillary scarcely 

 widened at tip, not wider than the exposed portion of the premaxil- 

 lary, which reaches the angle of the mouth and is everywhere dentig- 

 erous ; snout short, acute, the premaxillaries anteriorly on the level 

 of middle of orbit, the mandible slightly protruding; both jaws 

 with broad bands of short teeth of uniform length, mostly disposed 

 on the outer exposed surfaces of the bones; vomer with two short 

 patches of teeth, separated by a wide interval; palatine patches wide, 

 extending along the anterior two-thirds of the premaxillaries. Gill- 

 rakers slender, 1 rudiment and 4 developed above the angle of the 

 first arch, 1 or 2 rudiments and 10 or 11 developed below the angle. 

 Eye small, anteriorly placed, half the maxillary behind its posterior 

 border. Upper portion of opercle marked with concentric lines, and 

 with weaker radiating lines which diverge from the joint; subopercle 

 with lines radiating backward and downward. 



Scales mostly lost ; the few remaining extremely thin and flexible 

 with entire edges, those of the lateral line much higher than the 

 others, but largely concealed by overlapping scales above and below; 

 3 J series between lateral line and base of dorsal. 



Third dorsal ray midway between snout and rudimentary caudal 

 rays ; the middle of the length, exclusive of caudal, is under the fifth 

 dorsal ray. Ventrals inserted well in advance of dorsal, about mid- 

 way between front of eye and last anal ray, the longest ventral ray 

 extending slightly beyond the vent. Pectorals of moderate width, 

 their tips reaching base of ventrals. First anal ray slightly behind 

 vertical from middle of dorsal base. Adipose fin small, inserted over 

 the posterolateral, a little in advance of last anal ray. 



Photophores of normal size, much larger than in regale. When 

 uninjured, the majority of them are crossed by a curved pigment 

 band, similar to that in DiapJius, but lacking the definiteness there 

 found. Antorbital small, below axis of eye, detected with difficulty 

 in adult specimens. A single photophore near posterior angle of 

 cheeks, above terminal portion of maxillary. The usual spots under 

 preopercular margin and on gill membranes. A small humeral spot 

 present at upper end of opercular cleft. Suprapectoral on the first 

 scale below lateral line, its distance from lateral line one-fourth its 

 distance from pectoral fin; upper infrapectoral above middle of 

 pectoral base but below its uppermost rays ; lower infrapectoral ver- 

 tically below the upper, slightly in advance of a line joining the other 



