1911.] NATURAL SCIENCES OF PHILADELPHIA. 507 



much less inclined than lower, at first convex and then a little con- 

 cave just before occiput. Lower profile slightly convex. Snout short, 

 convex over surface and in profile, its length about f basal width. 

 Eye large, circular, rather high, its centre about first f in head. 

 Pupil circular. Eyelid very narrow, thin. Mouth small, mod- 

 erately wide and commissure short and nearly horizontal. Upper 

 lip firm, tough, not free. Lower lip thick, free and rather broad. 

 Premaxillary teeth biserial, rather irregular, strong, broadly tri- 

 angular, somewhat compressed with each face convex, tricuspid, 

 with median cusp enlarged and lateral cusp each side basally quite 

 broad. Maxillary with 3 minute teeth on its lower edge anteriorly 

 inside upper jaw. Mandibular teeth with symphyseal pair largest, 

 others graduated back soon, so that dentition only extends over 

 anterior half of mandible. Anterior mandibular teeth tricuspid, 

 median cusp much largest, bases strong, surfaces convex and edges 

 entire. Only first 4 mandibular teeth each side at all large. No 

 other teeth in mouth. Buccal folds broad, especially upper. Tongue 

 thick, fleshy, rather oblong, rounded and not free in front. Maxil- 

 lary rather small, narrow or width about 4 in eye, inclined vertically, 

 and scarcely extends beyond eye front. Mandible strong, powerful, 

 protrudes in front slightly beyond upper jaw tip, rami but little 

 elevated in mouth, and articulation taking place below front edge 

 of eye. Nostrils together, close before upper front eye edge, anterior 

 simple round pore, and posterior exposed in crescent. Interorbital 

 space evenly convex. Preorbital narrow, width about equals 

 maxillary width, and maxillary slips below lower edge anteriorly. 

 Infraorbital quite large, length greater than eye, and covering most 

 of cheek. Postorbital rather narrow, width about 2\ in eye. Opercle 

 narrow, width 2| in its depth. Hind preopercle edge nearly straight 

 and sloping a little forward. Cutaneous flap along opercular edge 

 rather broad. 



Gill-opening forward well before front pupil edge, though not 

 quite opposite front edge of eye. Rakers about 10 + 13, rather 

 weak, lanceolate, sharp-pointed, and longest about 1| in filaments. 

 Filaments about 2 in eye. No pseudobranchiae. Gill-membranes 

 well separated, forming a short free fold over narrowly constricted 

 isthmus anteriorly. Branchiostegals 4, strong and nearly subequal. 



Scales moderate, rather narrowly imbricated, disposed in longi- 

 tudinal series parallel with 1. 1., sometimes each with as many as 12 

 radiating strise, and mostly of more or less uniform size. Along 

 edges of body and on base of caudal scales a little smaller than others. 



