Zoology. 179 



to Belfast Lough, in June 1838. It has not been noticed 

 here since. 



S. lutea. — The Little Sole is very rare ; three were taken 

 by Thompson and Hyiidman off Dundrum, Co. Down, in 

 August 1836; four by Dr. Drummond in Belfast Lough, 

 June 1838 ; and by McCalla off the coast of Down about 

 1840 (Thompson). 



Physostomi. 



Salmo salar. — The Salmon is common, and there 

 are several productive fisheries : the Bann and Bush rivers are 

 specially noted ; a few are caught in Lough Neagh and 

 rivers therefrom. 



S. trutta. — The Sea-trout is known in the north of 

 Ireland as "White Trout," and is abundant on the coast, 

 ascending almost all the rivers, even those of small size. 

 The variety .S". cambricus is also abundant ; and Ogilby 

 points out that we have of this a long-headed and short- 

 headed form, the latter being as a rule females. 



S. fario.— The Common Trout (Brown Trout) is abun- 

 dant in almost all our rivers and lakes. 



var. S. ferox. Great Lake-trout. — Common in Lough 

 Neagh, where one weighing 36 lbs. has been 

 taken; often from 20 to 25 lbs. 

 var. S. estuarius. Estuary Trout. — Not uncommon 



at river mouths, 

 var. S. stomachicus. Gillaroo Trout. — Not uncom- 

 mon in Lough Neagh, where it sometimes attains 

 12 lbs. weight. 

 [S. alpinus. — I he Charr used to be common in Lough 

 Neagh, where old fishermen still speak of it as the "White 

 Fish" of their fathers; but about 1824 they disappeared 

 from the lake entirely. Although Thompson offered a 

 handsome reward for one in 1837, he failed to obtain 

 a specimen.] 



Coregonus pollan. — This is the most interesting 

 fish of the district, as it is not known outside Ireland, 

 although two closely-related species (the Vendace and the 

 Gwyniad) are found in the freshwater lakes in the Lake 

 district in England, and in Wales. Our Pollan has been 



