U.S. DEPARTMENT OF AGRICULTURE. | 
DIVISION OF ENTOMOLOGY. 
BULLETIN No. 19. 
AN ENUMERATION © 
PUBLISH HD 
OF THE 
SYNOPSES, CATALOGUES, AND LISTs 
NORTH AMERICAN INSECTS; 
TOGETHER WITH OTHER INFORMATION INTENDED TO ASSIST THE 
STUDENT OF AMERICAN ENTOMOLOGY. 
WASHINGTON: 
GOVERNMENT PRINTING OFFIOE. 
1888. 
22310—Bull 19 
