BY J. DOUGLAS OGILBY. 67 



length is 2 to 24 in that of the head, and its greatest width is 

 2'i to 24 in its length. Both iaws with a sina;le series of small 

 teeth anteriorly; a few small teeth on the palatines and along 

 the median ridge of the tongue; vomer and pterygoids toothless. 

 Opercle with the posterior border sinuous, the lower border 

 oblique and feebly convex, its length 2| to 2f in its depth; sub- 

 opercle deep and rhomboid, with the lower angle rounded, the 

 upper border bent upwards and forming an acute angle with the 

 hinder border, and its depth about three-fourths of its length; 

 lower limb of preopercle extending forwards to below the front 

 margin of the eye, the angle broadly rounded, the posterior border 

 gently emarginate and vertical. Forty-four to forty-six gill-rakers 

 on the lower branch of the anterior arch, the longest about a half 

 of the diameter of the eye. 



The space between the origin of the dorsal fin and the extremity 

 of the snout is li to 1^- in its distance from the root of the caudal; 

 the fourth ray is the longest, a little longer than the base of the 

 fin, and li to 1| in the length of the head; the outer border is 

 slightly emarginate : anal fin with the outer border emarginate, 

 the thii'd ray the longest, as long or nearly as long as the diameter 

 of the eye, and 1| to If in the length of its base, which is much 

 less than that of the dorsal; the last ray is somewhat produced, 

 and extends when laid back nearly to, to, or a little beyond the base 

 of the caudal : ventral tin inserted much nearer to the base of 

 the caudal than to the extremity of the lower jaw, with slightly 

 convex outer border, the first ray simple and not quite so long as 

 the second, which is 14 to 2 in the length of the head : pectoral 

 fin with fifteen rays, and the outer border rounded, the third ray 

 the longest, reaching to or a little beyond the vertical from the 

 origin of the dorsal, and 1^ to 1^ in the length of the head : 

 caudal fin deeply forked, with the lower lobe somewhat the longer, 

 from two-fifths to one-half longer than the head; the least depth 

 of its peduncle is more than twice its distance from the anal. 



Scales thin, each with three or four vertical striaj, which usually 

 branch off from a median longitudinal stria, and with the free 

 margin entire; axillary scale of the ventral small and triangular, 



