54 SALMONIA. [second day, 



onlv 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. — Tins 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 



