BIBLIOGRAPHY 401 



Verlaine, L. 1925. Sur la precarite des caracteres distinctifs des Vespa 

 vulgaris L. et germanica F. et sa signification biologique. Ann. et Bull. 

 Soc. ent. Belgique, 65, 3 1 5-349- 



Vernon, H. M. 1903. Variation in Animals and Plants. London. 



Wagner, M. 1889. Die Entstehung der Arten durch raumliche Son- 



derung. Basel. 

 Walker, E. M. 191 2. The North American dragon-flies of the genus 



Aeshna. Toronto Univ. Studies Biol., 11, pp. viii + 213, 28 plates. 

 Ward, H. L. 1904. A study in the variation of proportions in bats . . . 



Trans. Wisconsin Acad. Sci. (1903), 14, 630-649, 5 plates. 

 Warren, B. C. S. 1926. Monograph of the tribe Hesperidi (European 



species), with a revised classification of the subfamily Hesperiinae 



(Palearctic species) based on the genital armature of the male. Trans. 



Ent. Soc. London, 74, 1-170, 60 plates, 2 figs. 

 Warren, E. 1896. Variation in Portunus depurator. Proc. Roy. Soc. 



London, Biol., 60B, 221-243, 6 figs. 

 Waterhouse, G. A. 1922. Presidential address. Proc. Linn. Soc. 



N.S.W., 47, i-xvii, 3 plates. 

 Waterhouse, G. A., and Lyell, G. 1914. The Butterflies of Australia. 



Sydney. 

 Waters, E. G. R. 1926. Micro-Lepidoptera in South Devon, August, 



1925. Entomologist, 59, 158-161. 



1928. Observations on Coleophora caespititiella Z. and C. glaucicolella 



Wood. Ent. Mo. Mag., 64, 47-51, 1 fig. 



Watson, D. M. S. 1930. Adaptation. Presidential Address, Section D, 

 Brit. Assocn. Adv. Science (1929), 1930, 88-99. 



Weber, H. 1931. Lebensweise und Umweltbeziehungen von Trialeurodes 

 vaporariorum (Westwood). (Homoptera — Aleurodina.) Erster Beitrag 

 zur einer Monographic dieser Art. Zs. Morph. Oekol. Tiere, 23, 



575 _ 753» 59 fig s - 

 Webster, F. M., and Phillips, W.J. 1912. The spring grain-aphis or 



' green bug.' Bull. Bur. Ent. U.S. Dept. Agric, 110, 153 pp., 9 plates, 



48 figs., 5 diagrs. 



Weldon, W. F. R. 1899. Presidential Address, Section D, Brit. Assocn. 



Adv. Science (1898), 1899, 887-902, 6 figs. 



1 90 1. A first study of Natural Selection in Clausilia laminata. 



Biometrika, 1, 109-124, 3 figs. 



1904. Note on a race of Clausilia itala. Biometrika, 3, 299-307, 



2 figs. 



Wesenberg-Lund, C. 1926. Contribution to the biology of the genus 

 Daphnia . . . Skr. K. Dansk. Vid. Selsk. Kjobenhavn, (8) 11, 89-251, 

 1 plate, 21 figs. 



Whedon, A. D. 1 9 18. The comparative morphology and possible adapta- 

 tions of the abdomen in the Odonata. Trans. Ent. Soc. Amer., 44, 



373-437. 9 P^tes. 

 Wheeler, W. M. 191 3- Ants. Their structure, development and 

 behavior. New York. 



1923. Social Life among the Insects. London. 



1928. Foibles of Insects and Men. New York. 



Whiting, P. W. 1919. Genetic studies on the Mediterranean flour-moth, 

 Ephestia kuhniella Zeller. J. Exp. Zool., 28, 413-441, 2 plates. 



1 92 1. Heredity in wasps. A study of heredity in a parthenogenetic 



insect, the parasitic wasp, Habrobracon. J. Hered., 12, 262-266, 6 figs. 



2 D 



