72 NEW GENERA AND SPECIES OP AUSTRALIAN FISHES, 



d . Body elongate-oblong, slender, moderately compressed, its 

 depth less than the length of the head; ventral fins inserted 

 at or a little behind the middle of the body; muciferous 

 system of the head greatly developed, extending over the 

 shoulders; no silvery lateral band (0 mo diet us) . 

 Type. — H. copii. 



Hyperlophus copii, sp.nov. 

 D. 15-17. A. 19-20. Sc. 48-50/11-12. 



Body oblong-elongate, the ventral profile more convex than the 

 dorsal; head moderate, its length 4i to 4|, the depth of the body 

 4| to 5 in the total length; width of the body li to 2 in its 

 depth; depth of the head H to If, width of the head 2\ to 2|, of 

 the interorbital region 4^ to 5, diameter of the eye 2^^ to 2| in 

 the length of the head. Orbit circular ; interorbital region 

 slightly convex; snout rather short, as long as or a little shorter 

 than the diameter of the eye. Premaxillaries forming together a 

 well marked emargination in front; maxillary subtrulliform, with 

 the lower border finely denticulated, extending to the vertical 

 from the anterior border of the eye; its length is 2\ to 2f in that 

 of the head and its greatest width 2^ to 2^ in its length. Opercle 

 with its posterior border emarginate, its lower border oblique and 

 gently rounded, and its length 1| to 1| in its depth; subopercle 

 moderate and falciform, rounded below, terminating posteriorly 

 in an acute point, its depth 24 in its length; lower limb of pre- 

 opercle not extending forwards to below the middle of the eye, 

 the angle rounded, the posterior border slightly convex and sub- 

 vertical. Twenty-eight to thirty gill-rakers on the lower branch 

 of the anterior arch, the longest 2 to 21- in the diameter of the 

 eye. 



The dorsal fin originates a little nearer to the base of the caudal 

 than to the extremity of the snout; the third and fourth rays are 

 the longest, somewhat longer than the base of the fin, and li to 

 If in the length of the head; the outer border is truncated : anal 

 fin with the outer border truncated, the second or third ray the 



