PLATE IX, 



Fig. 'ol.—Myzus biennis, n. sp. 



Fig. 52.—A2yhis sp. ? 



Fig. 53. — 3/t/zus achyrardes Monell. 



Fig. M.~3Iyzus cerasi Fab. 



Fig. 55. — Rhopalosiphuni dianthi Schrank. 



Fig. d6.—Ccdllpterus asclepiadis Monell. 



