took, at the request of the United States Entomologist, 

 the introduction of one of its foreign parasites into the 

 wheat fields of Illinois. 



A very large amount of entomological breeding-cage 

 work has been done by us in the two years just past, 

 but of a kind which it is impossible to summarize. 

 Something of the amount of general work done in en- 

 tomology may be inferred from the fact that we have 

 added to the pinned collections fully 20,000 specimens, 

 and to the "biological" series, that illustrating the life 

 history and habits of Illinois insects, 2,700 bottles and 

 vials. 



PUBLICATIONS. 



The regular publications of the Laboratory and Ento- 

 mologist's office during the past two years have been 

 less numerous than usual; but the' matter now in press 

 and far advanced in printing is, on the other hand, unu- 

 sually important. 



My sixth report as State Entomologist, the seven- 

 teenth of the entire series, was printed in 1891. It con- 

 tains 105 pages and seven plates, three of which are 

 colored, with an appendix of 36 pages and one plate. 

 One of the articles of this report was issued separately 

 in advance, as a bulletin of the office. My seventh re- 

 port is now in course of preparation. 



A second edition of the first volume of our report on 

 the ornithology of the State, authorized by the legisla- 

 ture at its last session, has been long delayed, owing to 

 difficulties concerning the supply of paper. These have 

 been met, however, by the State Board of Contracts, 

 and the printing from our stereotyped plates is in prog- 

 ress at the time of writing. This volume sto])s with the 

 ColumbidtP, but a continuation and completion of this 

 work on the systematic ornithology of the State has 

 also been printed, and is now nearly ready for distribu- 

 tion as a first part of the second volume of the zor)log- 

 ical series of the Natural Historv Survey. 



