254 DESCRIPTIVE CATALOGUE OF AUSTRALIAN FISHES, 



infraorbital bone ; lateral line straight. Caudal fin emarginate. 

 Colour a golden green or red, with the under parts silvery- white. 



Salt-water river, Melbourne. Two specimens, nine and ten 

 inches in length. 



Genus Leuciscus, Cuv. 



Body covered with imbricate scales ; lateral line generally 

 complete, running in, or only a little below, the median line of 

 the tail. Dorsal fin short without stiff ray, commencing opposite, 

 rarely behind, the ventrals. Anal fin rather short or moderately 

 developed, generally with from nine to eleven rays, rarely with 

 eight, and still more rarely with fourteen rays. Mouth without 

 structural peculiarities ; lower jaw not trenchant ; barbels none. 

 Pseudobranchia3. Pharyngeal teeth conical or compressed, in a 

 single or double series. Intestinal tract short, with only a few 

 convolutions. 



Eivers of the Northern Hemisphere. Australia ? 



882. Leuciscus ? austkalis, Casteln. 

 Proc. Linn. Soc. N. 8.W. Vol. III., p. 51. 

 Norman Eiver. 



Pamily IX. GONOKHYNCHLD^E. 



Head and body entirely covered with spiny scales ; mouth with 

 barbels. Margin of the upper jaw formed by the intermaxillary, 

 which although short, is continued downwards as a thick lip, 

 situated in front of the maxillary. Adipose fin none ; the dorsal 

 is opposite to the ventrals and short like the anal. Stomach 

 simple, without blind sac ; pyloric appendages in small number. 

 Pseudobranchuc ; air-bladder absent. Gill-openings narrow. 



Genus Gonoriiyncuus, Gronov. 



Body elongate, subcylindrical ; head pointed ; snout conically 

 projecting beyond the mouth, which is inferior and semicircular. 



