CONTENTS. 



Page. 



Letter of Transmittal 5 



Introduction 7 



Report upon Insect Depredations in Nebraska . . ..Lawrence Bruner.. 9 



Report on the Scale-insects of California D. W. CoquiUett.. 13 



Entomological Notes for the Season of 1891 Mary E. Murtfeldt.. 36 



Report of Progress ln the Investigation of the Cotton boll 



Worm F. W. Malty.. 45 



Insects of the Season in Iowa Herbert Osborn . . bl 



Report of Entomological Work of the Season of 1891 . . F. M. Webster.. 63 



Report upon the Gypsy Moth in Massachusetts Samuel Henshaw . . 75 



Report of Apicultural Experiments in 1891 A. J. Cook.. 83 



