=Prittwitz, O. F. W. v.= Bemerkungen über die geographische Farbenverteilung unter den Lepidopteren. (Stett. Ent. Zeit., 1855, xvi, pp. 175–185.) =Latham, A. G.= The causes of the metallic lustre of the scales on the wings of certain moths. (Proc. Lit. and Phil. Soc. Manchester, iii, 1864, pp. 198–199. Quart. Journ. Micr. Sc., new ser., iv, 1864, pp. 48–49.) =Sorby, H. C.= On the coloring matter of some Aphides. (Quart. Journ. Micr. Sc., new ser., xi, 1871, pp. 352–361.) =Leydig, Franz.= Bemerkungen über Farben der Hautdecke und Nerven der Drüsen bei Insekten. (Archiv f. mikr. Anatomie, xii, 1876, pp. 536–550, 1 Taf.) =Weismann, A.= Studien zur Descendenz-Theorie, ii, 1876. =Hemmerling, Hermann.= Ueber die Hautfarbe der Insecten. (Bonn, 1878, p. 27.) =Buckton, C. B.= Monograph of the British Aphides. (London, 1879, ii, p. 167.) =Cameron, P.= Notes on the coloration and development of insects. (Trans. Ent. Soc. London, 1880, pp. 69–79.) =Hagen, Hermann A.= On the color and pattern of insects. (Proc. Amer. Acad. Arts and Sc., 1882, pp. 234–267.) =Poulton, Edward Bagnall.= The essential nature of the colouring of phytophagous larvæ (and their pupæ), etc. (Proc. Roy. Soc. London, xxxviii, pp. 269–315, 1884–1885.) —— An inquiry into the cause and extent of a special colour-relation between certain exposed lepidopterous pupæ and the surfaces which immediately surround them. (Phil. Trans. Roy. Soc. London, clxxviii, pp. 311–441, 1 Pl., 1887.) =Krukenberg, C. Fr. W.= Grundzüge einer vergleichenden Physiologie der Farbstoffe und der Farben. (Heidelberg, 1884, pp. 102.) =McMunn, C. A.= Krukenberg’s chromatological speculation. (Nature, xxxi, p. 217, 1885.) =Müller, Fritz, and Dr. H. A. Hagen.= The color and pattern of insects. (Kosmos, xiii, 1886, pp. 466–469.) =Slater, J. W.= On the presence of tannin in insects and its influence on their colors. (Trans. Ent. Soc. London, 1887, iii, Proceed., pp. 32–34.) =Bemmelen, J. F. van.= Ueber die Entwicklung der Farben und Adern auf den Schmetterlingsflügeln. (Tijdschrift der nederland. Dierkundige Vereeniging, ser. 2, pp. 235–247, 1889.) =Hopkins, F. G.= Uric acid derivatives functioning as pigments in butterflies. (Proc. Chem. Soc. London, 1889, p. 117; also Nature, xl, p. 335.) —— Pigment in yellow butterflies. (Nature, xlv, p. 197, 1891.) —— The pigments of the Pieridæ. (Proc. Roy. Soc. London, lvii, No. 340, pp. 5, 6, 1894. Phil. Trans. Roy. Soc. London, clxxxvi, pp. 661–682, 1896.) =Coste, F. H. P.= Contributions to the chemistry of insect colors. (The Entomologist, xxiii, 1890; xxiv, 1891, pp. 9–15, etc. Nature, xlv., pp. 513–517, 541–542, 605.) =Urech, F.= Beobachtungen über die verschiedenen Schuppenfarben und die zeitliche Succession ihres Auftretens. (Zool. Anzeiger, xiv, pp. 466–473, 1891; Ibid., August 1, 1892.)