3°o 



ROUT. Class IV. 



tail, refembling that of the perch before defcribecL 

 We dwell the lefs on thefe monftrous productions, 

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

 ready given an account of them in an ingenious 

 difTertation on fome of the Cambrian fifh, publifhed 

 in the Philofophical Tranj "anions of the year 1767. 

 Gillaroo The ftomachs 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 

 £fh. They likewife take into their ftomachs gravel, 

 or fmall ftones, to affift 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 flomachs, which, from fome 

 flight refemblance to the organs of digeftion 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 former appellation. It does not appear to me, 

 that the extraordinary ftrength of ftomach in the 

 Irijh fifh, mould give any fufpicion, that it is a 

 diftincl fpecies : the nature of the waters might in- 

 creafe the thicknefs; or the fuperior quantity of 

 fhell-fifh, which may more frequently call for the 

 life of its comminuting powers than thofe of our 

 trouts, might occafion this difference. I had op- 

 portunity of comparing the ftomach of a great 



* Hihfiph. Tranfafi. Vol. LXIV. p. 116. 310. 



Gillaroo 



