393 



leaving one space between them ; along this space follows a 

 cultivator which destroys the Aphides. Even this has to be 

 repeated at intervals if the lice continue to increase. These 

 methods have been tried in England, and they are not found 

 practicable owing to the different method of cultivation. 



Pl. XIV. Fig. I. — Macrosiphiim pisi Kalt., álate female. 



A. Cornicle. 



B. Cauda. 



C. Antenna. 



Fig. 2. — A. Macrosiphiim loti nov. sp. apterous female. 



B. Macrosiphiim trifolii nov. sp. 



C. Macrosiphiim pisi Kalt. 



Fig. 3. — Macrosiphiim uhnarice Schrank, álate female. 



A. Cornicle. 



B. Antenna. 



Fig. 4. — Macrosiphiim gei Koch, alate viviparous female. 



A. Cornicle. 



B. Antenna. 



Pl. XV. Fig. 5. — Macrosiphiim stellariœ nov. sp. 



Fig. 6. — Macrosiphiim ulmariœ Schrank, apterous female. 



A. Cornicle. 



B. Antenna. 



Fig. 7. — B. Macrosiphiim gei Koch. 



C. Macrosiphiim stellar i cs nov. sp. 



50 



