has greatly enhanced the content and quality 

 of the catalog. The aid furnished has involved 

 such diverse activities as reviewing prelimi- 

 nary drafts of various sections, and providing 

 new information on taxonomy, synonymy, 

 distribution, and biology. 



In the Symphyta, H. E. Milliron, formerly 

 of the Biosystematics Research Institute 

 (BRI), Agriculture Canada, Ottawa, re- 

 viewed parts of the manuscript and provided 

 information, as did H. R. Wong, Northern 

 Forest Research Centre, Edmonton, Alberta, 

 for Piistiphoia Latr. H. Greenbaum, Uni- 

 versity of Florida, Gainesville, furnished 

 data on Florida sawflies. 



The accuracy of host names in the Para- 

 sitica was checked by the following special- 

 ists : Smithsonian Institution — J. F. G. 

 Clarke, D. R. Davis, W. D. Duckworth, T. L. 

 Erwin, W. D. Field, and R. C. Froeschner; 

 Systematic Entomology Laboratory (SEL), 

 U. S. Department of Agriculture — D. C. 

 Ferguson, R. J. Gagne, R. D. Gordon, A. B. 

 Gurney, J. L. Herring, R. W. Hodges, J. M. 

 Kingsolver, J. P. Kramer, A. S. Menke, D. M. 

 Miller, L. M. Russell, C. W. Sabrosky, D. R. 

 Smith, T. J. Spilman, M. B. Stoetzel, E. L. 

 Todd, R. E. Warner, and R. E. White. D. M. 

 Weisman (SEL) identified the remains of 

 some lepidopterous larvae which served as 

 hosts. 



Specialists who were helpful in the Ichneu- 

 monoidea were : L. E. Caltagirone, University 

 of California, Albany, and C. C. Loan (BRI), 

 who reviewed parts of the manuscript on 

 Braconidae ; C. van Achterberg, Waarder, The 

 Netherlands, W. R. M. Mason (BRI), R. D. 

 Shenefelt, University of Wisconsin, Madison, 

 and R. Wharton, University of California, 

 Berkeley, who provided advice and informa- 

 tion on Braconidae; H. K. and M. C. Townes, 

 American Entomological Institute, Ann Ar- 

 bor, Michigan, who provided information and 

 advice on Ichneumonidae; and P. M. Marsh 

 (SEL) , who proofed the first-phase computer 

 printouts for Mesochorinae, Diplazontinae, 

 Oxytorinae and Orthocentrinae, and the third- 

 phase edit for Ichneumoninae. 



Z. Boucek, Commonwealth Institute of En- 

 tomology, London, and M. Graham, Oxford 

 University, provided much information on 

 Chalcidoidea, and D. P. Annecke, Plant Pro- 



tection Research Institute, Pretoria, South 

 Africa, advised on the placement of some 

 species assigned erroneously to Aphycus 

 Mayr. A special debt of gratitude is due C. F. 

 W. Muesebeck who painstakingly proofed all 

 edit phases of the computer printouts for 

 Encyrtidae and Torymidae and all but the 

 first-phase edits of all other families of 

 Chalcidoidea. 



D. B. Krombein provided welcome assist- 

 ance by helping to proof the manuscripts and 

 printouts for all superfamilies of aculeate 

 wasps. F. D. Parker, Bee Biology and Syste- 

 matics Laboratory, Utah State University, 

 Logan, furnished biological data for a number 

 of Utah wasps. 



We are grateful to R. M. Bohart, Univer- 

 sity of California, Davis, for reviewing the 

 manuscript on Chrysididae and for consider- 

 able other assistance which included informa- 

 tion on new synonyms and distribution in the 

 Elampinae and Chrysididinae, and the assign- 

 ment of taxa to species groups in Chrysis 

 L. H. E. Evans, Colorado State University, 

 Fort Collins, reviewed the section on Bethyli- 

 dae. 



In the Scolioidea, the late J. C. Bradley, 

 Cornell University, Ithaca, New York, and 

 J. G. Betrem, Deventer, The Netherlands, 

 reviewed the manuscript on Scoliidae, and 

 H. W. Allen, Moorestown, New Jersey, that 

 on Tiphiinae. W. E. Ferguson, San Jose State 

 University, California, and C. E. Mickel, Uni- 

 versity of Arizona, Tucson, furnished infor- 

 mation on synonymy and taxonomy of some 

 Mutillidae. 



R. R. Snelling, Los Angeles County Museum, 

 California, and M. R. Smith, Arlington, 

 Virginia, reviewed the section on Formicoi- 

 dea. J. F. Watkins II, Baylor University, 

 Waco, Texas, reviewed the section on Dory- 

 linae, and A. C. Cole, University of Tennessee, 

 Knoxville, that on Pogonomyrmex Mayr. 

 A. Francoeur, University of Quebec, Chicou- 

 timi, provided information on the fusca 

 group of Formica L. 



0. W. Richards, British Museum (Natural 

 History) , London, and R. M. Bohart reviewed 

 the entire manuscript for Vespoidea. J. van 

 der Vecht, Putten, The Netherlands, recom- 

 mended the systematic sequence adopted in 

 the Eumenidae and reviewed the manuscript. 



XIV 



