LIHTl-R 01' TRANSMITTAL. 



U. S. Department of Agriculture. 



Bureau of Entomology. 

 Was/ihir/ton, D. C, AprU .9, 1907. 

 Sir : I have the honor to transmit the manuscript of a paper con- 

 cerning certain important parasites of scale insects, which, on account 

 of its technical character, I recommend for publication as Part IV 

 of Technical Series No. 12 of this Bureau. 



Respectfully, 



L. (). Howard, 



Enfomologisi and Chief of Buieau. 

 Hon. James Wilson, 



Secretary of A [/ri culture. 

 II 



