458 ENTOMOLOGY 



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Dixey, F. A. 1893. On the phylogenetic significance of the variations produced by differ- 

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 Merrifield, F. 1893. The effects of temperature in the pupal stage on the colouring of 



Pieris napi, Vanessa atalanta, Chrysophanus phlceas, and Ephyra punctaria. 



Trans. Ent. Soc. London, pp. 55-67, pi. 4. 

 Poulton, E. B. 1893. The Experimental Proof that the Colours of certain Lepidopterous 



Larvae are largely due to modified plant Pigments derived from Food. Proc. Roy. 



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 Urech, F. 1893. Beitrage zur Kenntniss der Farbe von Insektenschuppen. Zeits. wiss. 



Zool., bd. 57, pp. 306-384. 

 Bateson, W. 1894. Materials for the Study of Variation treated with especial Regard to 



Discontinuity in the Origin of Species. 16 + 598 pp., 209 figs. London and New 



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 Dixey, F. A. 1894. Mr. Merrifield's Experimen ts in Temperature- Variation as bearing on 



Theories of Heredity. Trans. Ent. Soc. London, pp. 439-446. 

 Kellogg, V. L. 1894. The Taxonomic Value of the Scales of the Lepidoptera. Kansas 



Univ. Quart., vol. 3, pp. 55-89, pis. 9, 10, figs. 1-17. 

 Merrifield, F. 1894. Temperature Experiments in 1893 on several species of Vanessa 



and other Lepidoptera. Trans. Ent. Soc. London, pp. 425-438, pi. 9. 

 Hopkins, F. G. 1895. The Pigments of the Pieridae: A Contribution to the Study of 



Excretory Substances which function in Ornament. Phil. Trans. Roy. Soc. 



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 Spuler, A. 1895. Beitrag zur Kenntniss des feineren Baues und der Phylogenie der 



Fliigelbedeckung der Schmetterlinge. Zool. Jahrb., Abth. Anat. Ont., bd. 8, pp. 



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 Standfuss, M. 1895. On the Causes of Variation and Aberration in the Imago Stage of 



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F. A. Dixey. Entomologist, vol. 28, pp. 69-76, 102-114, 142-150. 

 Mayer, A. G. 1896. The Development of the Wing Scales and their Pigment in Butterflies 



and Moths. Bull. Mus. Comp. Zool., vol. 29, pp. 209-236, pis. 1-7. 

 Weismann, A. 1896. New Experiments on the Seasonal Dimorphism of Lepidoptera. 



Trans, by W. E. Nicholson. The Entomologist, vol. 29, pp. 29-39, etc. 

 Brunner von Wattenwyl, C. 1897. Betrachtungen iiber die Farbenpracht der Insekten. 



16 pp., 9 taf. Leipzig. Trans, by E. J. Bles: Observations on the Coloration of 



Insects. 1 6 pp., 9 pis. Leipsic. 

 Fischer, E. 1897-99. Beitrage zur experimentellen Lepidopterologie. Illustr. Zeits. 



Ent., bd. 2-4, 12 taf. 

 Mayer, A. G. 1897. On the Color and Color-Patterns of Moths and Butterflies. Proc. 



Bost. Soc. Nat. Hist., vol. 27, pp. 243-330, pis. i-io. Also Bull. Mus. Comp. 



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 Von Linden, Grafin, M. 1898. Untersuchungen iiber die Entwicklung der Zeichnung des 



Schmetterlingsfliigels in der Puppe. Zeits. wiss. Zool., bd. 65, pp. 1-49, taf. 1-3. 

 Newbigin, M. I. 1898. Colour in Nature. 12 + 344 pp. London. John Murray.* 

 Von Linden, Grafin, M. 1899. Untersuchungen iiber die Entwickelung der Zeichnung 



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