STATE OF ILLINOIS 
DEPARTMENT OF REGISTRATION AND EDUCATION 
DIVISION OF THE 
NATURAL HISTORY SURVEY 
STEPHEN A. FORBES Chief 
Vol. XIII. BULLETIN Article I. 
THE NORTH AMERICAN SPECIES OF THE 
GENUS TIPHIA (HYMENOPTERA, ACULE- 
AA) IN EE COLLECTION OF THE 
ILLINOIS STATE NATURAL 
HISTORY SURVEY 
BY 
J. R. MALLOCH 
PRINTED BY AUTHORITY OF THE STATE OF ILLINOIS 
URBANA, ILLINOIS 
September, 1918 
