PL 



cn^ SYNOPSIS 



2ViZ> ' OF THE 



FAMILIES AND GENERA 



OF THE 



HTMENOPTEKA 



OF 



AMERICA, NORTH OF MEXICO, 



/ 



TOGETHER WITH A CATALOGUE OF THE 



DESCRIBED SPECIES, AND 



BIBLIOGRAPHY. 



COMPILED BY E."' T.'^ CEESSON. 



TRANSACTIONS 



AMERICAN ENTO]\IOL()(iICAL SOCIETY 



SUPPLEMENTARY VOLUME, 



1887. 



