836 CALIFORNIA ACADEMY OF SCIENCES. 



wide, slightly concave; nostrils ending in very short, 

 wide tubes, the posterior over the anterior margin of eye, 

 the anterior in front of it a distance equal to the diame- 

 ter of eye; opercle ending in a short, wide spine covered 

 with skin ; it is situated slightly above the middle of gill- 

 opening; gill-opening running from about the eleventh 

 pectoral ray to a level with the eye. 



Origin of dorsal slightly behind base of pectoral, its 

 distance from the snout 3-^ in length of body, its anterior 

 rays short, gradually lengthening posteriorly, the rays 

 from the anterior third to near the end about equal, the 

 last ray abruptly shortened, forming a slight notch where 

 the fin joins the caudal; posterior two-thirds of caudal 

 free above; anal similar to dorsal, about the same height, 

 its origin nearer snout than base of caudal,, about under 

 the base of the tenth dorsal ray, posteriorly it is longer 

 than the dorsal, joining the caudal at about half its length ; 

 ventral disk nearly round, its distance from tip of lower 

 jaw i x /i in its diameter, 1 in distance from vent, 2 from 

 first anal ray; vent midway between front of anal and 

 edge of disk; upper lobe of pectoral broadly rounded, 

 reaching to two-thirds of the distance between vent and 

 front of anal; lower lobe long, reaching nearly to vent; 

 caudal long and slender, rounded behind. Skin very thin 

 and loose on body and head, covering the anterior parts 

 of dorsal and anal, attached at about the middle of rays 

 posteriorly and covering the base of caudal rays. 



Color light brown, lighter below, thickly covered with 

 minute brown points, which form spots and mottlings on 

 sides; upper part of head dark, lips spotted with brown; 

 dorsal and anal dark brown, slightly mottled with lighter; 

 pectoral light, with irregular brown spots and bars run- 

 ning across it. Caudal dark brown, mottled at base, two 

 ligfit bars crossing it towards its end, leaving a narrow 

 posterior margin of brown. 



