426 PROCEEDINGS OF THE ACADEMY OF [May, 



jaw, all sharply pointed and with entire edges. Buccal fold inside 

 each row of teeth large and fleshy. Tongue broad, depressed, fleshy, 

 rounded and free in front. Mandible large, strong and protruding 

 well beyond snout, surface broadly convex below, and rami but little 

 elevated in mouth, though much deeper at articulation behind than 

 at symphysis. Nostrils large, together, anterior large pore with broad 

 cutaneous flap behind exposing posterior in crescent. Interorbital 

 broadly and evenly convex. Infraorbital width about equals eye, 

 with narrow anterior preorbital moiety. Postero-infraorbital width 

 about equals H eye-diameters, though not extending below to pre- 

 opercle ridge, leaving an elongated unevenly triangular naked region 

 on cheek below, greatest width of which area about 2| in eye. Post- 

 orbital large, nearly equal to greatest width 01 postero-infraorbital. 

 Opercle vertical, narrow, greatest width about 3+ its depth or but 

 trifle less than eye. All suborbitals and opercle with conspicuous or 

 well-marked radiating striae, also some coarser and uneven stria? in 

 lower hind flange of preopercle. Power and exposed surfaces of sub- 

 opercle, interopercle and branchiostegals also show a few feeble stria 3 . 

 Cutaneous margin of gill-opening narrow. Upper surface of head 

 covered with smooth skin and a long, narrow median occipital fontanel. 

 Shoulder-girdle little exposed, smooth. 



Gill-opening forward about opposite hind eye edge. Rakers 8 + 12. 

 conic, with rather slender tips, fleshy, pliable, uppermost and lower- 

 most somewhat rudimentary, longest 2 in eye. Filaments 1^ in eye. 

 Xo pseudobranchise. Gill-membranes form broad fold over isthmus, 

 latter broad and surface slightly convex. Branchiostegals 4, broad, 

 all well exposed. 



Scales small, cycloid, mostly disposed in longitudinal series parallel 

 with 1. 1. and becoming a little enlarged just after gill-opening, along 

 abdominal serraa and behind pectoral base. Caudal base broadly 

 covered with scales but little smaller than those on caudal peduncle. 

 Anal base also broadly scaly, only outer scales much smaller. A 

 concealed depressed sagittate spine before dorsal origin with apex 

 directed towards head. Small broad-based double spine before anal 

 origin. Xo axillary scaly flaps to paired fins. P. 1. complete, begins 

 a little high at first, slopes down soon till opposite median axis and 

 then runs straight to caudal base, and also extends over squamation 

 of latter. Tubes rather small, simple, well exposed, but not extending 

 entirely over exposures of scales. Scales not completely passing over 

 predorsal ridge, but leave a narrow naked strip. 



1 )orsal origin falls about midway in vertical between eye center and 



