548 



PROCEEDINGS OF THE ACADEMY OF 



[Oct., 



Head moderate, compressed, profiles similar, and flattened sides 

 slightly constricted below. Snout convex in profile and over surface, 

 its length about f its width. Eye large, high, rounded, its centre 

 about first f in head. Mouth broad, with short commissure, termi- 

 nal. Maxillary well inclined, free, and extends beyond front eye 

 edge, though not quite to front pupil edge. Lips firm, little 

 developed. Teeth strong, with broad bases, simply conic or tri- 

 cuspid and in latter case usually of larger size. Upper teeth biserial, 

 though series close and outer slightly irregular. Maxillary with 

 three cusps inside near base. Mandible with a series of mostly 

 tricuspid teeth, but little smaller posteriorly along sides of rami. 

 Inner buccal folds broad. Tongue depressed, rounded and free in 



Fig. 14.—Hyphessobryco)i stlginatiaa Fowler. (Type 



front. Mandible rather strong, rami not elevated inside mouth, 

 and closed jaws about equal. Nostrils together, posteriorly situated 

 in snout length, anterior simple pore and posterior crescentic. Inter- 

 orbital moderately convex. Suborbitals rather broad, and infra- 

 orbital nearly covers cheek, surfaces smooth. Hind preopercle edge 

 slightly inclined posteriorly. Opercle deep. Top of head or cranium 

 soft, with broad parietal fontanel, though still narrower within 

 frontal region. 



Gill-opening extends forward nearly opposite front pupil edge. 

 Rakers about 5+10?, slender, lanceolate, much shorter than 

 filaments and latter about 3 in eye. Isthmus narrowly constricted, 

 surface convex. Branchiostegals slender, subequal. 



Scales cycloid, well exposed in lengthwise series, moderately 

 large, and of nearly uniform size. A few scales on caudal base, 



