EXPERIMENT STATION BULLETINS. Q,g^ 



PLATE III. 



1. Lecanium hesjjeridum. — Showing derm markings. 



2. Lecanium longulum. — Showing derm markings. 



3. Lecanium perforatum. — Showing derm markings. 



4. Lecanium oleae. — Showing derm markings. 



5. Lecanium hemisphaericum. — Showing derm markings. 



6. Lecanium numismaticum. — On twig of Scotch pine, showing male 



and female scales. 



