MUSEUM NOTE, NO. VII. 15 another with three white leathers in the tail; another with one white tail-feather. The one now in the Essex Museum was certainly the prettiest I have seen. We kept it for several months, with an ordinary hen blackbird, in a large wired-in space round a tree, so that the birds could fly, and build in the branches. They seemed thoroughly at home for months, and enjoyed their food, which was thrown in every day. We had great hopes of an interesting progeny, but the beautiful bird died after a few days of depression. I took it up to Rowland Ward the same day. He told me he had never seen a bird so infested with insects, and that this was very probably the cause of its death. I never saw another pied bird with such symmetrical markings. As a rule they were more curious than pretty. After the death of this bird, no more pied blackbirds were seen in the gardens for eighteen months or two years. Then, about the end of October 1918, to my great satisfaction, three more pied blackbirds appeared—one with a white tail, another with white on its head, and the third with nondescript white feathers unevenly distributed over its body. This revives the hope that the race may be continued at least for the present. The specimen presented by Miss Willmott is, generally speaking, white, with black wings and tail; the breast and flanks are closely mottled with black, and a few black feathers appear on the crown and back. In each wing is a single white quill. The beauty of the bird is chiefly due to the symmetrical disposition of the markings, the right and left sides being almost exactly alike. New Essex Lichen.—Among the lichens collected at West Mersea on the occasion of the Club's excursion on 20th September 1913 (see Essex Nat., xvii., pp. 229-234) was a form of Lecanora hageni, Ach., found growing on oak sea-piles. This has since been determined by Miss A. Lorrain Smith, F.L.S., as var. marina, Th. Fr., a variety of the species which, although occurring on the Continent, had not previously been recorded from Great Britain. A specimen has been deposited in the British Museum herbarium, and is described in Miss Lorrain Smith's recent Monograph of the British Lichens, part i., p. 278 (2nd edition, 1918). —Percy Thompson, Loughton.