108 ENTOMOLOGICAL SOCIETY 



Time does not offer to particularize the work done by the 

 authors mentioned. In the descriptive and systematic field the 

 workers were numerous. The general subject was covered by La 

 Porte, Walker, and Gene. In Coleoptera were Eschscholtz, 

 Mannerheim, Lacordaire, Mulsant, Chevrolat, Aube, Water- 

 house, Schioedte, Murray, and Motschulsky. In Diptera, Des- 

 voidy, Macquart, and Loew. In Lepidoptera, Schaeffer, Bois- 

 duval, Zeller, Morris, Doubleday, andGuenee. In Hymenoptera, 

 Brulle, Hartig, Shuckard, Smith, Kirchner, Dahlbom, and 

 Walsh. In illustrations and natural history, Stevens, Passerini, 

 Harris, Curtis, and Perris. In economics, several of those 

 mentioned and Kollar, Guerin-Meneville, Ratzeburg, and Fitch. 

 In anatomy, Strauss-Duerkheim, Audouin, Newport, and Bur- 

 meister. In general writings, Stevens, Guerin-Meneville, Dun 

 can, MacLeay, Newman, Westwood, Burmeister, Hope, Lucas, 

 Walsh, Glover, Haldeman, LeBaron, and Costa. Hagen, the 

 great bibliographer, and specialist in Neuroptera as well as in 

 the general subject, though born somewhat later, belongs with 

 this group of entomologists. 



I have not classified with the above a group of entomologists 

 born a little later (1815-1850) but forming practically a continua 

 tion of this group, and represented in part by the older living 

 writers of the present day or immediately preceding the generation 

 just beginning to take a prominent place in the science. This 

 group covers the later life of Charles Darwin, and the workers of 

 the period were more influenced by him, and their investigation and 

 studies bear more directly on the difficult and intricate questions 

 connected with biogenesis which his work brought into special 

 prominence. 



Of these writers, prominent in the study of Coleoptera are 

 Redtenbacher, Schaum, LeConte, Thompson, Blackburn, Crotch, 

 Lindemann, and Horn. In Diptera, Snellen van Vollenhoven, 

 Rondani, Osten Sacken, Schiner, Brauer, Bergenstamm, Mik, 

 and Van der Wulp. In Lepidoptera, Stainton, Scudder, Ed 

 wards, Clemens, Grote, Fernald, and many others. In Hem- 

 iptera, Signoret, Stal. Douglas, Marshall, and Uhler. In 

 Hymenoptera, Foerster, Kirby, De Saussure, Zaddach, Cres- 

 son, Provancher, Bassett, Brischke, Mayr, and Holmgren. In 



