HORATIO C. WOOD, Jr.--On the Chilopoda of North America, with Catalogue of all the specimens in the collection of the Smithsonian Institution. <Journ. Ac. Nat. Sc. Phil., New Ser., Vol. V, 1863, pp. 5-42. ---- The Myriapoda of North America. <Trans. Amer. Philos. Soc., Vol. XIII, 1865, pp. 137-248, 3 pl. This is the first and only monograph of the Myriapoda published in this country. ROBERT LATZEL.--Die Myriapoden der Oesterreichisch-Ungarischen Monarchie. Erste Haelfte: Die Chilopoden, Wien, 1880. Zweite Haelfte: Die Symphylen, Pauropoden und Diplopoden, Wien, 1884. The most recent comprehensive work on this order, and very important from a classificatory standpoint. LUCIEN M. UNDERWOOD.--The North American Myriapoda. <Entomol. Amer., Vol. I, 1885, pp. 141-151. A complete bibliographical review of the subject, with tables of families and genera. ARACHNIDA. N. M. HENTZ.--Descriptions and figures of the Araneides of the United States. <Journ. Boston Soc. Nat. Hist., Vols, IV-VI, 1842-'50. These papers form the basis of the study of American arachnology. Numerous species are described, but not in synoptic form. T. THORELL.--On European Spiders. Part I. Review of the European genera of Spiders. Upsala, 1869-'70. N. M. HENTZ.--Araneae Americae septentrionalis. The Spiders of the United States. Edited by J. H. Emerton and E. Burgess. <"Occasional Papers" of the Boston Society of Natural History, 1875. A reprint of Hentz's papers on North American spiders. GRAF EUGEN KEYSERLING.--Amerikanische Spinnen aus den Familien Pholcoidae, Scytodoidae und Dysderoidae. <Verh. k. k. zool.-bot. Ges. in Wien, Vol. XXVII, 1877, pp. 205-234. ---- Neue Spinnen aus Amerika. (Six parts.) <Verh. k. k. Zool.-bot. Ges. in Wien, Vols. XXIX-XXXIV, 1879-'84. E. SIMON.--Les Arachnides de France. Paris, Vols. I-V, 1874-'84. These two works represent the most recent systems of classification, and are therefore of great general value, although they deal only with the European fauna. LUCIEN M. UNDERWOOD.--The Progress of Arachnology in America. <Amer. Natur., Vol. XXI, 1887, pp. 963-975. A very useful review of the bibliography, with synoptic table of the families of the Araneae. AMERICAN PERIODICALS. THE AMERICAN NATURALIST. A monthly journal devoted to the natural sciences in their widest sense (24 volumes published up to date. Now published at Philadelphia). [Publication discontinued.]ANNALS OF THE LYCEUM OF NATURAL HISTORY OF NEW YORK (8 volumes, 1824-'67. Continued since 1876 as Annals of the New York Academy of Sciences). [Publication discontinued.]BULLETIN OF THE BROOKLYN ENTOMOLOGICAL SOCIETY (7 volumes, 1878-'85. Continued as Entomologica Americana). BULLETIN OF THE BUFFALO SOCIETY OF NATURAL HISTORY (4 volumes completed; 1874 to 1883).