T 



300 TROUT. Class IV. 



tail, refembling that of the perch before defcri bed. 

 We dwell the lefs on thefe monftrous produ6lions, 

 as our friend the Hon. Daines Barrington, has al- 

 ready given an account of them in an ingenious 

 diiTertation on fome of the Cambrian fifh, publifhed 

 in the PhilofopMcalTranfacliGns of the year 1767. 

 GiLLARo^o The flomachs of the common trouts are uncom- 

 monly thick, and mufcular. They feed on the 

 fhell-fifh of lakes and rivers, as well as on fmall 

 fifh. They likewife take into their flomachs gravel, 

 or fmall ftones, to afTift in comminuting the teftace- 

 ous parts of their food. The trouts of certain lakes 

 in Ireland^ fuch as thofe of the province of Galway^ 

 and fome others, are remarkable for the great 

 thicknefs of their ftomachs, which, from fome 

 flig-ht refemblance to the organs of dio;ei1:ion in 

 Name. birds, have been called gizzards : the Irijh name 

 the fpecies that has them, Gillaroo trouts. Thefe 

 ftomachs are fometimes ferved up to table, under 

 the form.er appellation. It does not appear to me, 

 that the extraordinary ftrength of ftomach in the 

 Irifi fifh, fnould give any fufpicion, that it is a 

 diftintft fpecies : the nature of the waters might in- 

 creafe the thicknefs •, or the fuperior quantity of 

 fhell-fifh, vvhich may more frequently call for the 

 ufe of its comminuting powers than thofe of our 

 trouts, might occafion this difference. I had op- 

 portunity of comparing the llomach of a great 



* Fhilofofto, rranfacl. Vol. LXIV. p. 116. 310. 



Gillaro§ 



