Salvin found the Pied Flycatcher not uncommon about Souk Harras in the Eastern Atlas, and Mr. Tyrrwhitt Drake saw it during the spring migration in Tangier and Eastern Morocco. A specimen from the River Gambia is in the collection of Mr. R. B. Sharpe. Mr. J. H. Gurney, jun., during a recent tour in Algeria, encountered this amongst other familiar birds. He says (“Ibis,” 1871, p. 76): “It was not until April that I saw this species, after which it became common. In the dayats and in the Gardaia, where they most abounded, the proportion of adult males in full summer plumage to young birds and females was as one to five. They looked exceedingly picturesque in the rich foliage of the oases, clinging perhaps to a rough palm stem, though their more usual perch was the upper bough of a bush, whence they would dart off after passing flies.” To this I may add that the note frequently repeated is not unlike that of the Redstart, although softer and more agreeable, and the bird when uttering it often shuffles its wings after the manner of a Hedge Sparrow. Canon Tristram found this bird to be a summer resident in Palestine, and first noticed it in Galilee on April 23rd; but, though remaining to breed, he considered it rather a scarce bird there. An allied species, _Muscicapa albicollis_, is generally distributed over the South of Europe, Palestine, and North Africa, which differs from the Pied Flycatcher in having the nape of the neck white instead of black; in other words, the white of the throat extends entirely round the neck. It is found in Greece, Turkey, Tuscany, Spain, Portugal, and France, less commonly in the north of France, and not in Belgium or Holland. It is singular, considering that the two species occupy the same haunts during a great portion of the year, that the White-necked Flycatcher never accompanies its more sable congener to England; yet, so far as I am aware, there is no instance of its occurrence here on record. What is the cause which operates to restrain one species from migrating, when a closely allied bird of similar habits is impelled to take a long and perilous journey? Truly it is a curious question.