420 PROCEEDINGS OF THE ACADEMY OF [May, 



mandible 2|; interorbital 24; first branched anal ray If; least depth 

 of caudal peduncle 2£; pectoral If; ventral (tip damaged) 2|-. 



Bod}' deep, strongly compressed, contour slightly ovoid with greatest 

 depth at dorsal origin, profiles generally similar, predorsal and post- 

 ventral slightly trenchant and all other edges rounded convexly. 

 Caudal peduncle well compressed, length about f its least depth. 



Head rather small, well compressed, upper profile at first slightly 

 convex and then equally concave, lower profile a little convex, and 

 flattened sides slightly constricted below. Snout convex over surface, 

 obtuse, length about half its base. Eye rounded, but little elevated 

 and near first | in head. Maxillary exposed, except under edge 

 which slips below narrow preorbital, nearly vertical, toothless, extends 

 back a little beyond front eye margin, but not quite opposite pupil. 

 Mouth broadly transverse, rather small, commissure as seen laterally 

 slight and a little inclined. Lips rather thin. Teeth only in jaws, 

 upper biserial and lower entirely uniserial, and most all or at least 

 anterior ones with a strong median cusp and 2 smaller ones each side. 

 Upper teeth of about uniform size, all at least tricuspid and smaller 

 than mandibular teeth. Mandible about even with snout tip when 

 closed, scarcely projects, surface convex and rami but little elevated. 

 Tongue depressed, upper surface flattened, free in front, tip rounded. 

 Nostrils close together, close before eye above, similar, and anterior 

 with slight posterior cutaneous flap exposing posterior in slight cres- 

 cent. Interorbital evenly convex. Postero-infraorbital width 2 in 

 eye, and postorbital a little narrower. Suborbitals not entirely 

 covering cheek or extending to preopercle ridge, leaving a rather wide 

 strip of skin. Preopercle ridge inclined a little forward, and at lower 

 corner 3 diverging flutings. Opercle narrow, width about 2f its depth. 

 Occipital fontanel broad. Head bones all smooth. 



Gill-opening forward about opposite or trifle before front pupil 

 edge, though not to front eye edge. Rakers about 9 + 9, slender, 

 weak, pointed, compressed, about 2 in filaments. Latter about 2 

 in eye. No pseudobranchiae. Isthmus compressed, constricted in 

 front, surface convex. Branchiostegals 4, compressed, rather large. 



Scales large, each well exposed, in longitudinal series parallel with 

 1. 1., each with 2 or 3 radiating stria?, size uniform except smaller ones 

 apparently distributed entirely over caudal, though at present most 

 of them removed. Anal base covered with small scales like those on 

 caudal. Other fins naked. Apparently no scaly axillary pectoral or 

 ventral flaps. L. 1. complete, a trifle decurved at first from shoulder, 

 then straight to median caudal base. Tubes in 1. 1. simple, each well 

 exposed and not extending back to exposed scale edge. 



