6 University of Michigan 



row of minute short teeth, and some may be partly biserial. 

 Fine teeth on vomer and palatines. Lips moderate. Two 

 rather stout chin barbels extend back about opposite hind edge 

 of preopercle below. Nostril about midway in snout length. 

 Interorbital depressed, or nearly level. Preorbital moderately 

 broad, its width slightly greater than eye. Preopercle edge 

 entire. 



Gill-opening extends forward nearly opposite front eye 

 edge. Rakers 6+15, lanceolate, and largest 2/3 of filaments, 

 latter ^ of eye. Pseudobranchi^e nearly long as gill-filaments. 

 Isthmus narrowly constricted, rather long, and with median 

 lengthwise furrow. 



Scales large, mostly uniform, finely ctenoid, rather narrow- 

 ly imbricate and in nearly even lengthwise series. Head 

 largely scaly, and cheek with 3 rows of scales. Axil of ven- 

 ■ tral with pointed scale about J4 of fin, and rounded scale be- 

 tween fin bases of similar length. A'ertical fins largely de- 

 pressible close to or as if below scales of adjacent regions. 

 Lateral line complete, largely concurrent with dorsal profile. 

 Tubes of lateral line little branched, or simple in most cases, 

 and extend well over scale exposure. 



Spinous dorsal origin nearly at first third between snout 

 tip and caudal base, spines rather firm, and second longest, 

 though depressed fin reaches 2/3 to soft dorsal. Latter in- 

 serted about midway between hind preopercle edge and cau- 

 dal base, first ray longest with others graduated down be- 

 hind, though not extending so far posteriorly as tip of last 

 ray, and depressed fin i^ to caudal h3.se. Caudal forked, up- 

 per lobe slightly longer than lower. Anal inserted about 

 midway between caudal base and pectoral origin, first ray 

 longest and others graduated down behind. Pectoral rather 



