THE POLLAN. 323 



ventrals ; jaws equal, the upper wide across and sloping down to the 

 month, mystache wide and thin ; teeth in the jaws few, very slight, not 

 easily discovered, none on the palate, a circuit of fine teeth on the 

 tongne ; front of the tongue contracted and lengthened, eyes rather large. 

 Body covered with scales, lateral line slightly sinking at first, then 

 straight. First dorsal fin behind the centre of gravity with about 

 fourteen rays; adipose fin posteriorly; tail forked, the rays twenty-three ; 

 anal with twelve rays, the first ray with more than twice the length of 

 the last. Vent far behind ; ventral fins large, and with twelve rays ; 

 pectorals sixteen. Colour on back dark blueish, pale yellow on gill cover, 

 brilliant white on the sides and belly, iris yellow with an orange border. 

 The pectoral fin in the instance under description measured an inch and 

 one-eighth. 



