The Black Tern is not included in Professor Ansted's list, and there is no specimen in the Museum. These are all the Terns I have been able to prove as having occurred in the Channel Islands, though it seems to me highly probable that others occur--as the Sandwich Tern, the Lesser Tern, and the Roseate Tern (especially if, as I have heard stated, it breeds in small numbers off the coast of Brittany). Professor Ansted includes the Lesser Tern in his list, but that may have been a mistake, as my skin of a young Black Tern was sent to me for a Lesser Tern. 166. KITTIWAKE. _Rissa tridactyla_, Linnaeus. French, "Mouette tridactyle."--The Kittiwake is a regular and numerous autumn and winter visitant to all the Islands, sometimes remaining till late in the spring, which misled me when I made the statement in the 'Zoologist' for 1866 that it did breed in the Channel Islands; subsequent experience, however, has convinced me that the Kittiwake does not breed in any of the Islands. Captain Hubback, however, informed me that a few were breeding on the rocks to the south of Alderney in 1878, but when Mr. Howard Saunders and I went with him to the spot on the 25th June, we found no Kittiwakes there, all those Captain Hubback had previously seen having probably departed to their breeding-stations before our visit, and after they had been seen by him some time in May. Professor Ansted includes the Kittiwake in his list, but only marks it as occurring in Guernsey and Sark. There are two specimens in the Museum, an adult bird and a young one in that state of plumage in which it is the Tarrock of Bewick and some of the older authors.