GEN. COREGONUS. THE POWAN. 155 



des Poissons, v. 696, of a supposed species of Sal- 

 mon found by " le citoyen Noel" in Loch Lomond, 

 which from its resemblance to a herring he deno- 

 minated Corcgone clupeoide. In the prosecution of 

 hi& ichthyological researches, Dr. Parnell again found 

 the same fish, in abundance, in the same locality, 

 and has given a full account of it in the Annals of 

 Nat* Hist, * from which we derive the following 

 particulars. It occasionally grows to the length of 

 sixteen inches. Its food, from an examination of 

 the contents of the stomach, appears to consist of 

 entomostraca, the larvas of insects, beetles, and 

 small worms. It is very plentiful in Loch Lomond, 

 where it is known by the name of Powan or Fresh- 

 water Herring, and caught from March till Sep- 

 tember with large drag nets. It has occasionally 

 been taken with a small artificial fly, but has never 

 been known to touch a minnow or bait of any 

 kind. Large shoals may be observed early in the 

 morning approaching the shores in search of food, 

 rippling the water with their fins in their progress. 

 They are never seen in the middle of the day. They 

 are in best condition for the table in the months of 

 August and September, and are so much esteemed 

 as a well-flavoured and wholesome food, that most 

 of them are consumed by the inhabitants in the 

 neighbourhood of the Loch, and they are scarcely 

 ever carried to a distance. They shed their spawn 

 in October, November, and December, and are out 

 of condition till March. Dr. Parnell has observed 

 * Vol. i. p. 161. 



