Window screens, 77 Wingate's nomenclature symbols, 12 Wing patterns contrasted, 12 Worble-flies, 26, 28, 69 WOODS & SONS LTD., PRINTERS, LONDON, N. Transcribers note. This work is presented as is, with no changes to the spelling, except for confirmed typos. Printer's errors, where obvious, and original spelling have been retained. Variations in hyphenation and compound words have been preserved. Italicized words and phrases in the text version are presented by surrounding the text with underscores. The Caret character (^) is used to denote superscripts. Table of Contents, List of Illustrations, etc. Discrepancies: many of the items in the front matter sections do not match the titles in the book's content section. End of Project Gutenberg's The Book of the Fly, by G. Hurlstone Hardy