(20) DOLLFUS, A.: "On West Indian Isopod Crustaceans." _Proc. Zool. Soc. Lond._ 1896, pp. 388-400. (21) DOLLFUS, A.: "Tableau Iconographique des _Philoscia_ d'Europe." _Feu. des Jeun. Natural._ Ser. 3, 1897, pp. 70-73 and 91-95. (22) DOLLFUS, A.: "Land Isopods der Balkan region." _Wissenschaft Mittheilung aus Bosnien und der Hercegovina._ Vol. IV. (1896). (23) DOLLFUS, A.: "Les Crustacés Isopodes Terrestres à grande dispersion," _Feu des Jeun. Natural._ Ser. 3 (Oct. 1897). (24) DOLLFUS, A.: "Sur la Distribution Geographique des Isopodes Terrestres dans l'Afrique Septentrional du Senegal à Obock." _Proc. Inter. Congres. Zool._ Cambridge, 1898, pp. 249-259. (25) DOLLFUS, A.: "Catalogue des Crustacés Isopodes Terrestres de France." _Feu. des Jeun. Natural._ Ser. 3 (October 1899). (26) FABRICIUS, J.C.: _Entomologia systematica._ Vol. II., Hauniae, 1793. (27) FABRICIUS, J. C.: Supplement to the last, 1798. (28) FERNIE, Dr.: _Animal Simples_, 1899. (29) FITCH, Asa.: _Noxious Insects of New York._ Albany, 1856. (30) GUERIN, F.E.: "Sur _Porcellio Poeyi_." _Ann. Sci. Soc. Entom. de France._ Vol. VI. (Paris, 1837, in Bull. ent., page 6). (31) HELLER, C.: _Reise der Novara; Crustacea._ 1865. (32) KINAHAN, J.R.: "Analysis of certain genera of terrestrial Isopoda." _Nat. Hist. Rev._ Vol. IV. (1857). (33) KINAHAN, J.R.: "On the genera _Philoscia_, _Itea_ and _Philougria_." _Nat. Hist. Rev._ Vol. V. 1858. (34) KOCH, C.L.: _Deutschlands Crustaceen, Myriapoden and Arachniden._ Regensburg, 1835-1844. Koch's descriptions and figures were published in _Deutschlands Crustaceen_ and appeared also in Panzer's _Faunæ Insectorum Germanicæ_ continued by Herrich-Schäffer (which see). The number of the parts of the latter which correspond to those of the former are placed in square brackets after them in the list here given. Part 6 (1836) [139]; Part 22 (1838) [162]; Part 28 (1839) [178]; Part 34 (1840) [180]; Part 36 (1844) [186]. Some of the dates quoted will be found to differ from those usually given (in Budde-Lund (8, p. 7) for instance), and printed on the parts of the copy in the Zoological Society's Library. Our authority for this change is Mr. C. D. Sherborne, who bases his dates upon reviews which he has discovered. (35) KOCH, C. L.: _System der Myriapoden mit den Verzeichnissen und Berichtigungen zu Deutschlands Crustaceen, Myriapoden und Arachniden._ Regensburg, 1847. (36) LAMARCK, J. B.: _Histoire naturelle des animaux sans vertébres._ Vol. V., 1818. (37) LATREILLE, P. A.: _Histoire Naturelle des Crustacés et des Insectes._ Vol. VII., Paris, 1804.