LITERATURE 447 
Krukenberg, C. F. W. 1884. [Colors and Pigments of Insects.] Ent. 
Nachr., jhg. Io, pp. 291-206. 
Poulton, E. B. 1884. Notes upon, or suggested by the Colours, Markings 
and Protective Attitudes of certain Lepidopterous Larve and 
Pupz, and of a phytophagous hymenopterous larva. Trans. Ent. 
Soc. London, pp. 27-60, pl. I. 
Poulton, FE. B. 1885. The Essential Nature of the Colouring of Phytopha- 
gous Larve and their Pupe, ete. Proc. Roy. Soc. London, vol. 
38, pp. 269-315. 
Poulton, E. B. 1885. Further Notes upon the Markings and Attitudes of 
Lepidopterous Larve. Trans. Ent. Soc. London, pp. 281-3209, pl. 7. 
Poulton, E. B. 1887. An Enquiry into the Cause and Extent of a Special 
Colour-Relation between Certain Exposed Pupz and the Surfaces 
which immediately surround them. Phil. Trans. Roy. Soc. Lon- 
don, vol. 178, pp. 311-441, pl. 20. 
Chapman, T. A. 1888. On Melanism in Lepidoptera. Ent. Mon. Mag., 
Vol. 255 p. 40: 
Dixey, F. A. 1890. On the Phylogenetic Significance of the Wing-Mark- 
ings in certain Genera of the Nymphalide. Trans. Ent. Soc. Lon- 
don, pp. 89-120, pls. 1-3. 
Merrifield, F. 1890. Systematic temperature experiments on some Lepi- 
doptera in all their stages. Trans. Ent. Soc. London, pp. 131-1509, 
pls. 4, S. 
Poulton, E. B. 1890. The Colours of Animals. 13-4 360 pp., I pl. 66 
figs. New York. D. Appleton & Co. 
Seitz, A. 1890, 1893. Allgemeine Biologie der Schmetterlinge. Zool. 
Jahrb., Abth. Syst., etc., bd. 5, pp. 281-343; bd. 7, pp. 131-186.* 
Coste, F. H. P. 1890-91. Contributions to the Chemistry of Insect Colors. 
Entomologist, vol. 23, pp. 128-132, etc.; vol. 24, pp. 9-15, etc. 
Hopkins, F. G. 1891. Pigment in Yellow Butterflies. Nature, vol. 45, 
pp. 197-108. 
Merrifield, F. 1891. Conspicuous effects on the markings and colouring 
of Lepidoptera caused by exposure of the pupe to different tem- 
perature conditions. Trans. Ent. Soc. London, pp. 155-168, pl. 9. 
Urech, F. 1891. Beobachtungen itiber die verschiedenen Schuppenfarben 
und die zeitliche Succession ihres Auftretens (Farbenfelderung) 
auf den Puppenflugelchen von Vanessa urticee und Io. Zool. 
Anz. jhe. 14; pp. 466-473. 
Beddard, F. E. 1892. Animal Coloration. 8-+ 288 pp., 4 pls., 36 figs. 
London, Swan Sonnenschein & Co. New York, Macmillan & Co. 
Gould, L. J. 1892. Experiments in 1890 and 1891 on the colour-relation 
between certain lepidopterous larvae and their surroundings, to- 
gether with some other observations on lepidopterous larve. 
Trans. Ent. Soc. London, pp. 215-246, pl. 11. 
Merrifield, F. 1892. The effects of artificial temperature on the colouring 
of several species of Lepidoptera, with an account of some experi- 
ments on the effects of light. Trans. Ent. Soc. London, pp. 33-44. 
