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Show 106 THE M A R O . U I S OF TWEEDDALE ON [Jan. 15, suffused with a pinkish tint, evidently marking a period of cessation of growth, the colour having stained that part of the shell which then formed the lip of the aperture. The uppermost dark band of the last whorl is situated a little above the middle, and passes just above the suture, and can be traced in part almost to the apical whorl. Adjoining this thin line there is a second thread-like one which borders the sutural edge of the whorls. The median band is very broad, frequently more than twice as wide as that above it, and encircles the whorl somewhat below the periphery; and the basal one, equally broad with the preceding, winds around the rounded margin of the umbilicus. Helix (Camena) congener. Other allied forms of this species are H. luhuana, Sowerby, which seems to be distinct from H. peliomphala, H. simodce, Jay, and H. herklotsi, Martens. Whether these five are good and distinct species or only local forms of one and the same, of which intermediate gradations have not yet been observed, remains yet to be ascertained ; but, so far as our present knowledge extends, the differences of form, texture, banding, &c, warrant the presumption that they are specifically distinct. The series of specimens upon which the above description is based has been kindly placed in m y hands for examination by Mr. G. B. Sowerby, junior, who has presented two of them to the national collection. 10. Contributions to the Ornithology of the Philippines.- N o . IV. O n the Collection made by M r . A . H . Everett in the Islands of Dinagat, Bazol, Nipah, and Sakuyok. B y A R T H U R , Marquis of T W E E D D A L E , F.R.S., President of the Society. [Received December 11, 1877.] (Plates VI.-VIII.) The four islands in which Mr. Everett collected the birds of which I propose to give an account are situated to the north of the |