e c 



CO NTRIB UTIONS FROM THE 

 * "' DEPARTMENT OF 



ZOOLOGY AND ENTOMOLOGY 



Iowa State College of Agriculture 



...AND... 



Mechanic Arts. 



NUMBER 3, 



On the North American Species of the Subgenera Diaspidiotus 



and Hemiberlesia, of the Genus Aspidiotus. 



Wilmon Newell. 



AMES. IOWA. 



PRESS OF THE TIMES, 



1899. 



