Title: A synopsis of the Accipitres (diurnal birds of prey) comprising species and subspecies described up to 1920, with their characters and distribution.
Abstract: THE necessity for a second edition of my work on the Accipitres arose in the first place out of the many corrections called for in the first part of my "' Synoptical List,'' owing to the fact that that first part was rather a compilation than an original work, and in the second place out of the additions and corrections to the whole work that followed upon a more intensive study of the various groups.For this second edition I have had the advantage of consulting Mr. W. Sclater's MS. list of the Accipitres which he prepared for publication in the interval between my two editions, but kindly placed at my disposal on learning of the preparation of my second edition.