151 . 



Illinois has made liberal appropriations for the purchase of material, 

 and a large series of named pupae has been obtained from the follow- 

 ing sources : the American Entomological Company, Ward's Natural 

 Science Establishment, the Kny-Scheerer Company, the New England 

 Entomological Exchange, the New Jersey Entomological Company, 

 and from Mr. Wm. Beutenmiiller, A. H. Manee, of Southern Pines, 

 N. C, E. J. Oslar, of Denver, Colo., and Miss Annette F. Braun, of 

 Cincinnati, Ohio. Dr. L. O. Howard, Chief of the Bureau of Ento- 

 mology of the U. S. Department of Agriculture, Mr. August Busck, 

 of the U. S. National Museum, and Dr. Wm. Barnes, of Decatur, 

 111., have furnished a number of rare species which contributed in no 

 small measure to the progress of the investigation. The collections of 

 the Illinois State Laboratory of Natural History have been freely 

 available, and for this courtesy Professor S. A. Forbes deserves our 

 hearty thanks as well as his assistants, Mr. J. R. Malloch and Mr. C. 

 A. Hart. Dr. T. H. McDunnough, of Decatur, 111., and Miss A. F. 

 Braun have assisted in the identification of bred material, thus mak- 

 ing available many species that otherwise could not have been used. 

 The collections furnished by Miss Braun and Mr. Beutenmiiller 

 deserve especial mention. Miss Braun collected, bred, and determined 

 more than one hundred species of the so-called Microlopidoptera which 

 really formed the working basis for this part of the investigation. 

 Most of the work done on the Sphingidae has been from specimens 

 furnished by Mr. Beutenmiiller, who has collected a large series of 

 forms. Mr. Samuel Henshaw, of the Museum of Comparative Zool- 

 ogy at Harvard, very kindly loaned a large series of Papilionoidea, 

 most of which were collected by Dr. S. H. Scudder and described in 

 his "Butterflies of the Northern United States and Canada." Profes- 

 sor J. G. Needham, of the Department of Entomology at Cornell 

 University, also loaned a large number of species from the collections 

 of that University, which were especially valuable and could not be 

 obtained elsewhere. 



It would be impossible in this brief space to enumerate the many 

 ways in which Professor MacGillivray has assisted in the preparation 

 (>f this paper. His interest in the work has been unfailing, and what- 

 ever of value it may contain is due to his inspiration, encouragement, 

 and helpful criticism. 



