42 Unircrsity of Michigan 



Body fusiform, compressed, especially behind. Caudal 

 peduncle well compressed, its least depth about 3/5 its length. 

 Head broadly depressed above, its least depth about 3/5 its 

 length. Head broadly depressed above, upper profile nearly 

 straight from snout tip to occiput, lower convex. Sides of 

 head but slightly approximate below. Snout depressed, up- 

 per surface nearly level, length about 3/5 its width. Eye 

 rounded, high, close to upper profile, and slightly anterior to 

 center in length of head. Mouth moderate, transverse, lateral 

 cleft slight and little inclined. Premaxillaries greatly pro- 

 tractile. Maxillary not quite reaching opposite- front eye 

 edge. Lips rather thin. Teeth simple, conic, in bands in 

 jaws, and some in outer row enlarged and slightly curved. 

 Upper and lower inner buccal folds moderately wide, entire. 

 Tongue depressed, elongate, end rounded and free in front. 

 Lower jaw robust, protruded slightly beyond upper, rather 

 depressed. Nostrils simple, close above front edge of eye. 

 Hind preopercle edge inclined slightly backward. 



Gill-opening extends forward slightly beyond hind eye edge, 

 not quite to hind pupil edge. Gill-rakers 7, lanceolate, very 

 short, firm, less than half of gill-filaments, which about 2/3 

 diameter of eye. Isthmus narrowly constricted. 



Scales moderate, with concentric striae, enlarged on top of 

 head, and smaller on breast, prepectoral region and caudal 

 base. Cheek with 2 rows of scales. Lateral line obscure, com.- 

 plete. developed as single pore on each exposure of scale, fre- 

 quently absent from a scale of its course. 



Dorsal origin at last third in space between front eye edge 

 and caudal base. Anal inserted well in advance of dorsal 

 origin, or little nearer caudal base than pectoral origin. Cau- 

 dal (damaged) apparently rounded. Pectoral moderately 



