310 CALIFORNIA ACADEMY OF SCIENCES. 



broad and flat, the profile almost straight, not very ob- 

 lique; width of head 1J 11 in its length, at the rictus 

 1-f 1J; depth 2. Fontanel extending to base of occipital 

 process. Occipital process coossified with the dorsal 

 plate; the surface of the bones of the head striate, cov- 

 ered with skin; opercle emarginate, profusely branched 

 ridges radiating from its angle. 



Eye one-half its diameter behind the rictus, nearer pos- 

 terior nares than margin of opercle, its diameter 3-4 

 in snout, 6-8 in head, 5-7 in interocular. 



Maxillary barbel compressed at base, filiform at tip. 

 Snout depressed, pointed, 

 the upper jaw little project- 

 ing. Teeth cardiform, both 

 bands interrupted in the 

 middle. 



Gill-membranes separate 

 to in front of the eye. Gill- I/ SJ. 



rakers short, spine - like, 

 6+18. Pectoral pore round, placed high. Lateral line 

 zig-zag, with numerous branches. 



Distance of dorsal spine from snout 3-3 \ in the length; 

 the spine long and slender, 1| in the head, measuring 

 to end of ray, inconspicuously granular in front, smooth 

 behind; distance of adipose fin from the dorsal fin 2f in 

 the length, the fin higher than long, little shorter than 

 the dorsal fin. 



Caudal fin obliquely rounded, 6-8 in the length. 



Origin of anal fin little nearer base of caudal than to 

 the rictus. 



Ventrals extending to or somewhat beyond origin of 

 anal, about 2 in head. 



Pectoral spine flexible, smooth on both margins, about 

 1J-2 in head. 



Dorsal surface dark brown; sides, especially backward, 



