70 CALIFORNIA ACADEMY OF SCIENCES. 



cheeks and post-orbital area is reticulate with miicifer- 

 ous canals; humeral process granulose. Fontanel broad, 

 about 3 times as long as the eye, a bridge near its pos- 

 terior end. 



Eye small, elliptical, 2h-S in snout, 8-9 in head, 4-5 

 in interocular. 



Maxillary barbels about reaching to base of pectoral; 

 post-mental barbels to edge of gill-membrane or farther. 



Upper jaw considerably projecting 

 lips thick and plicate; the teeth strong, 

 rather large; teeth of the vomer in an 

 elongate patch Avhich is constricted, 

 sometimes narrowly separated in the 

 middle, contiguous with a large sub- " 

 triangular patch on the palate. 



Gill-membranes forming an obtuse 

 angle and having a broad free margin across the isth- 

 mus. Gill-rakers about half as long as the eye, 3-|-8. 



Distance of dorsal fin from tip of snout 2|-2| in the 

 length; the spine granular in front, 1|-1| in head, the 

 highest ray not much higher than the spine; distance 

 of adipose behind the dorsal 3|-3| in the length, the 

 adipose fin much longer than high, as long as the dorsal 

 fin. 



Caudal fin forked, IJ-IJ in head. 



Anal fin scarcely longer than high, slightly emargin- 

 ate. 



Ventrals not reaching to the anal, about two in head. 

 Vent much nearer base of ventrals than to the origin of 

 the anal. 



Pectoral spine If-li in head, its outer edge granular, 

 toothed, its inner margin with many recurved teeth. 



Pectoral pore minute or obsolete; vertical series of 

 pores none. 



Head bluish brown, the body rather more bluish 



