LETTER OF SUBMITTAL. 
DEPARTMENT OF AGRICULTURE, 
DIvISsION OF ENTOMOLOGY. 
Washington, D. C., June 27, 1887. 
Str: [ have the honor to submit for publication Bulletin No. 15, from 
this Division, prepared under your instructions. 
Respectfully, C. V. RILEY, 
Entomologist. 
Hon. NORMAN J. COLMAN, 
Commissioner of Agriculture. 
