54 SALMONIA. [SECOND DAY, 



only with smaller bars. I have in July, likewise, 

 fished in Loch Con, near Ballina, and Loch Melvin, 

 near Ballyshannon. In Loch Con, the party caught 

 many small good trout, that cut red; and in the 

 other I caught a very few trout only, but as many of 

 them were gillaroo or gizzard trout as common trout. 



POIET. This must have been an interesting kind 

 of fishing. In what does the gillaroo differ from the 

 trout ? 



HAL. In appearance very little, except that they 

 have more red spots, and a yellow or golden-coloured 

 belly and fins, and are generally a broader and thicker 

 fish ; but internally they have a different organisation, 

 possessing a large thick muscular stomach, which has 

 been improperly compared to a fowl's, and which gene- 

 rally contains a quantity of small shell-fish of three or 

 four kinds ; and though in those I caught the stomachs 

 were full of these shell-fish, yet they rose greedily at 

 the fly. 



POIET. Are they not common trout which have 

 gained the habit of feeding on shell-fish ? 



HAL. If so, they have been altered in a succession 

 of generations. The common trouts of this lake have 

 stomachs like other trouts, which never, as far as my 

 experience has gone, contain shell-fish; but of the 

 gillaroo trout, I have caught with a fly some not 

 longer than my finger, which have had as perfect a 



