266 Mr. W. Thompson on a new British Fish, plants in England has no doubt caused them to be misunder-stood by most of our native botanists, and I feel great plea-sure in being able to give the result of my study of the living plants in the Channel Islands, where they occur in profusion. It appears to me that no two plants can be more truly distinct than this species and its predecessor. St. John's College, Cambridge, Oct. 27, 1838. XXXI. — On Fishes ; containing a notice of one Species new to the British, and of others to the Irish Fauna. By William Thompson, Esq., Vice-President of the Natural History Society of Belfast. Coregonus clupeoides, Nillson.? Cunn. — In a letter from the Rev. T. Knox, of Toomavara, dated Jan. 29, 1838, and ac-companying a specimen of a fish procured at my request, was the following observation : (i We have at last been able to get the little fish mentioned by the fishermen as being found in the Shannon in winter — it was sent from Killaloe. I believe it goes down the river with the eels every winter ; it takes no bait/' The Rev. C. Mayne of Killaloe — by whose kind at-tention the specimen was secured — informs me, in reply to some queries, ci that it is called a Cunn by the fishermen of that place, who state that it is never taken but in the eel-nets about Christmas, when the 'run of eels 9 is nearly over, and that they never saw more than seven or eight caught in a year, seldom indeed so many." Killaloe, it should perhaps be stated, is not less than eighty miles from the mouth of the Shannon. In the hope of ascertaining the occurrence of this fish at Portumna, about twenty miles higher up the river, I wrote to a correspondent there, at the same time describing the species, and on the 24th of March last received the fol-lowing reply. iC I think it very uncertain whether there is such a fish in the Shannon, but still some old fishermen say there is, and that they are a little smaller than the common herring, but exactly the same shape and colour ;" and he again observes — " after making every inquiry, I learn that about half a dozen white fish like herrings were got in Lough Derg [a mere expansion of the river Shannon] very near this, about
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