184 NOTES ON THE GENERA OF AUSTRALIAN FISHES. 



Murrayia, Casteln., Proc. Zool. Soc. Vict. 1872, i. p. 61. 



Riverina, Casteln., I.e., p. 64. 



Branchiostegals six : pseudobranchise present. Body oblong- 

 ovate, and somewhat compressed. Head with distinct muci- 

 ferous channels. Opercle with two spines, either or both of which 

 may be sub-divided into two or more points : edges of sub- and 

 interopercles finely serrated, preopercle serrated on the vertical 

 limb ; angle and lower limb with patches of coarser denticles. 

 Teeth villiform on the jaws and vomer ; palatines with a minute 

 anterior patch ; tongue smooth. One dorsal fin, moderately 

 notched, with 11 or 12 spines : the anal with three. Scales 

 moderate, ctenoid, present on the occiput. Bases of vertical 

 fins scaly. Pyloric appendages in small numbers. 



