INTRODUCTION. i, 



instructive, the variety in form and structure being 

 almost infinite. 



Fig. 6. SNOUTS OF AUSTRALIAN FISHES. 



iiary Perch. 



2. Herri n ir. 



3. Carp. 



4. Beardie (Ling). 



5. Red Rock -Cod. 



6. Horse-Mackerel. 



7. Giant Boar-Fish. 



8. Goat-Fish. 

 13. Tarwhine. 



9. "Old Man" Snapper. 



10. Garfish. 



11. Stout Long-Tom. 



12. Nannygai. 



In most species of the bony or teleostean-fishes, there 

 is to be seen a kind of raised line running through the 



