508 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 84 



Importation into tlie United States of Mexican parasites of the bean weevil. 

 Introduction into Mauritius of the Madagascar parasites of Oryctes living on 



sugar cane. 

 Introduction into France of Doryphorophaga, a fly parasite of the Colorado 



potato beetle. 



Doctor Trouvelot, in the preparation of this list, had to examine 

 many publications. He was fortunate, however, in having three 

 papers that gave rather full summaries of work that had been done 

 previously. Paul Marchal, for example, had published in the Annals 

 of the National Agronomical Institute, Series 2, Volume 6, pp. 281 to 

 354 (1907), a very full paper entitled (translated) "Utilization of 

 Auxiliary Entomophagous Insects in the Struggle Against Insects 

 Injurious to Agriculture." This large paper I translated in full, and 

 the English text was published in the Popular Science Monthly, 

 Volume y2, pp. 352 to 370 and 406 to 419, April and May, 1908. 



Another very full account that goes into much detail concerning 

 the work that had been done on introduced parasites down to that 

 time was published in the Bulletin of the Italian Agricultural Society, 

 Volume 14, No. 8, April 30, 1909, by Prof. F. Silvestri. It was 

 entitled " Remarks on the Present Condition of Agricultural Ento- 

 mology in the United States of North America and What Italian 

 Agriculture Can Learn." This report, covering 65 closely printed 

 pages, was done in large part into English in Hawaii and published 

 in the August, 1909, number of the Hawaiian Forester and Agri- 

 culturist, pp. 287 to 336. 



In the Yearbook of the United States Department of Agriculture 

 for 1 91 6 I published, on pages 273-288, an illustrated article entitled 

 " The Practical Use of Insect Enemies of Injurious Insects," in 

 which I mentioned a number of experiments that had been carried 

 out subsequent to the publication of the admirable summaries by 

 Marchal and by Berlese. 



Many articles have been written in many languages on the general 

 subject. It has, in fact, attracted universal attention. 



In the following pages I will consider this question of parasite 

 importation under the different countries (arranged alphabetically) 

 and, under each country, chronologically. Many things will necessarily 

 be omitted, which is a pity, since every attempt, even the blatantly 

 unsuccessful ones, should be listed if a thoroughly competent study 

 of the whole subject is to be made. There are undoubtedly many of 

 which there exists no printed record. It would be interesting if we 

 could secure data concerning as many as possible of George Compere's 



