HYMENOPTERA OF AMERICA NORTH OF MEXICO 



ACKNOWLEDGMENT 



We are indebted to a number of our colleagues for furnishing 

 information which has been included in this supplement. Their 

 names and the groups in which they furnished information are as 

 follows : 



H. W. Allen (Ichneumonidae) 



J. de Beaumont (Sphecidae) 



G. Becker (Ichneumonidae) 



R. M Bohart (Vespoid and Sphecoid 



wasps) 

 W. F. Buren (Formicidae) 

 J. C. Downey (Ichneumonidae) 

 L. E. Eighme (Sphecidae) 

 H. E. Evans (Vespoid and Sphecoid 



wasps) 

 W. E. Ferguson (Mutillidae) 

 J. E. Gillaspy (Sphecidae) 

 J. D. Haddock (Mutillidae) 

 C. P. Haskins (Formicidae) 

 G. Heinrich (Ichneumonidae) 

 W. W. Judd (Biology) 

 P. B. Kannowski (Formicidae) 

 R. L, King (Formicidae) 

 F. E. Kurczewski (Sphecidae) 

 W. R. M. Mason (Ichneumonidae) 



A. Menke (Sphecidae) 

 C. D. F. Miller (Chalcidoidea) 

 H. E. Milliron (Symphyta, Chalci- 

 doidea, and Apidae) 

 T. B. Mitchell (Apoidea) 

 S. Momoi (Ichneumonidae) 



F. D. Parker (host-parasite records) 

 0. Peck (Chalcidoidea) 



J. F. Perkins (Ichneumonidae) 

 T. C. Schneirla (Formicidae) 

 H. A. Scullen (Sphecidae) 

 L. K. Smith (Ichneumonidae) 

 R. R. Snelling (Colletidae) 

 R. W. Taylor (Formicidae) 

 P. H. Timberlake (Apoidea) 

 H, K. and M, Townes (Ichneumoni- 

 dae) 



G. S. Walley (Ichneumonidae) 

 N. A. Weber (Formicidae) 



E. 0. Wilson (Formicidae) 



