56 NEW YORK STATE MUSEUM 



office to public notice. The more destructive insects have received 

 attention from year to year, and in addition a serious attempt has 

 been made to conduct special investigations with the idea of making 

 more valuable additions to our knowledge of injurious species. 



The San Jose scale became established in the east in the early 

 90's, resulting in an urgent demand for information concerning 

 this insect and its allies. A special study was made of this species, 

 and its more important congeners, and the results presented in a 

 comprehensive bulletin on scale insects [N. Y. State Mus. Bui. 46]. 

 This work was supplemented by experiments from year to year 

 with a number of remedial washes, the details being given in annual 

 reports for the last five years. The very destructive grape root 

 worm of the Chautauqua region was carefully studied and many 

 exceedingly important facts learned regarding the pest and the 

 feasibility of controlling it demonstrated. The details are given in 

 Museum bulletins 59 and 'J2. 



Serious injuries to shade trees in the late 90's led to an investiga- 

 tion of the destructive forms, and the results were presented in 

 several reports and bulletins, and summarized accounts given in the 

 fourth and fifth reports of the Forest, Fish and Game Commission. 

 These studies were introductory to work on forest insects, part of 

 which appeared in the seventh report of the Forest, Fish and Game 

 Commission. Field investigations of this group have been con- 

 tinued through a series of years and the general results brought 

 together in a comprehensive memoir on Insects Affecting Park and 

 Woodland Trees. 



Aquatic insects constitute an important and hitherto much 

 neglected group. Studies of these forms were begun in 1900 and 

 continued to date with remarkable additions to our knowledge. The 

 credit for this is due largely to Dr James G. Needham of Lake 

 Forest College and his collaborators, Messrs Betten and Johannsen. 

 These investigations resulted in a monograph of our dragon flies, 

 special attention being given to the much neglected immature 

 stages, to an as nearly complete account of our May flies, to im- 

 portant additions to our knowledge concerning the Caddis flies, 

 and a portion of the true Neuroptera, Sialidae. The midges, Chi- 

 ronomidae and Simuliidae, exceeding important groups, have been 

 the subject of extended and comprehensive studies by Mr Johann- 

 sen, the results being given in Museum bulletins 68 and 86. A 

 monographic account of our stone flies is nearly completed, and a 

 similar work on the Caddis flies in preparation. Many new forms 



