OF WASHINGTON. 121 
complicated synonymy, a large proportion of the species described 
by him as new having been described before. 
Kirchner, in his catalogue of the Hymenoptera of Europe, has 
brought together a great number of records of rearing of parasites, 
and repeats nearly all of Ratzeburg, but this part of his work was 
hurriedly done. 
Edouard Ferris, in his various papers, has recorded many para- 
sites. These records have been brought together and published 
with the observations of Giraud, who was also a most industrious 
observer of the habits of parasites, under the caption " Liste d'ec- 
losions d'Insectes," by Giraud and Laboulbene, in the Annals of 
the French Society for 1877. 
Rheinhard and Hartig and Pastor Kawall in the Entomological 
Journal of Stettin, Westwood in the Transactions of the London 
Society, Snellen van Vollenhoven in his Pinacographia, Curtis in 
his Farm Insects, Kaltenbach in his Enemies of Plants, Mayr in his 
short monographs published by the Imperial Zoological-Botanical 
Society of Vienna, Brischke in his various papers published by the 
Konigsberg Society, Buckton in his monograph of the Aphids, 
Wachtl in his short papers in the Vienna Entomological Journal, 
Cameron in recent papers published by the Glasgow Natural His- 
tory Society, Lindemann of Moscow, Andre of Beaune, A. 
Dours in his Catalogue of the Hymenoptera of France, Marshall 
in his Monograph of the British Braconidas, Moller in the Entom, 
Tidskr., and G. C. Bignell in one of the Ray Society publications, 
have been the principal contributors to this branch of the subject 
in Europe, and the principal sources of the information which I 
have brought together. 
In this country the only attempt at a list or table is the short 
one prepared by myself and published in Bulletin 5 of the Division 
of Entomology. Nearly all of our records occur in isolated form 
in the writings of our economic entomologists. Riley has recorded 
more rearings than any other American author, in his Reports on 
the Insects of Missouri, in the American Entomologist, in his re- 
ports as entomologist to theU. S. Department of Agriculture, in the 
reports to the U. S. Entomological Commission, and in the Trans. 
St. L. Acad. Sci., and in the Proc. Nat. Mus. Fitch, Harris, 
Walsh, Le Baron, Shinier, Norton, Emily A. Smith, French, 
Forbes, Lintner, Comstock, Packard, Ashmead, Cook, Weed, 
Hubbard, Patton, Provancher have all published a greater or lesser 
