VI INTRODUCTION 



with our own, have furnished the raw data for this study and for the 

 papers to follow on other parts of the family. Part of our own col- 

 lecting, that in Arizona, California, and Colorado in 1947 and 1948, 

 was supported by grants from the American Philosophical Society. 

 The curators of North American collections have been uniformly 

 helpful in making the material under their care available, and we 

 wish to express our thanks to them. Miss Luella Walkley of the 

 U. S. Department of Agriculture, and Mr. J. F. Perkins of the British 

 Museum (Natural History) have, on several occasions, supplied tech- 

 nical information which was needed in the course of the study. The 

 drawings of generic characters were made by Mr. M. Tsujita and 

 those of specific characters mostly by Miss Y. Morimoto, under the 

 direction of Dr. M. Tokunaga of Kyoto, Japan. The habitus draw- 

 ings of two typical Metopiinae (figure 163) are by Miss M. McKay 

 of the Division of Entomology, Canadian Department of Agriculture, 

 and kindly lent to us for inclusion in this publication. The maps 

 showing the distribution of the species were prepared by Mrs. Rae 

 Stauffer. The manuscript was typed by Mrs. Stauffer and by Mr. 

 Duwane Barnes. 



Materials Studied 



An effort has been made to study the material in all of the large 

 North American collections, and since the curators contacted were 

 obliging in the loan of material, this has largely been accomplished. 

 The ichneumonid collections studied are listed below. 



Academy of Natural Sciences of Philadelphia, 



Philadelphia, Pennsylvania 

 American Museum, New York, New York 

 California Academy of Sciences, San Francisco, California 

 Canadian National Collection, Ottawa, Ontario 

 Carnegie Museum, Pittsburgh, Pennsylvania 

 Cornell University, Ithaca, New York 

 Dreisbach Collection, Midland, Michigan 

 Harvard University, Cambridge, Massachusetts 

 Michigan State University, East Lansing, Michigan 

 Ohio State University, Columbus, Ohio 

 Oregon State College, Corvallis, Oregon 

 Townes Collection, Ann Arbor, Michigan 

 U. S. National Museum, Washington, District of Columbia 

 University of Alberta, Edmonton, Alberta 

 University of California, Berkeley, California 

 University of California at Davis, Davis, California 

 University of Kansas, Lawrence, Kansas 

 University of Michigan, Ann Arbor, Michigan 

 University of Minnesota, St. Paul, Minnesota 

 University of Wisconsin, Madison, Wisconsin 



