134 THE MONTHLY BULLETIN, 



fornia fan palm, Podocarpus, golden rod, Ligustrum, Artocarpus, 

 Bidens, Kennedya, Euoiiymus, lignum-vitge, fuchsia, box elder, agave, 

 cocoanut, and pistacia. 



Control. — Fumigation with full schedule No. 1. Spraying is only 

 efficacious on deciduous fruit trees M'ith lime-sulphur (1-9), caustic 

 soda distillate water mechanical mixture or distillate emulsion. 



Natural Enemies. — The ladybird beetles, steel-blue {Orcus chahj- 

 beus Boisd.), Lindonis lopanthce Blaisd., the twO:.stabbed {Chilocorus 



Fig. 117. — Red scalu, Clirijiiotnijluclus uttrantii (Mask.), 

 on orange. (Essig, P. C. Jr. Ent. ) 



bivuhttfus Mul.), Bcijmnus marginicoUis Mann., Scymnus nehulosus 

 Lee., Ilippodamia convergens Guer., Hippodamia amhigua Lee, 

 CoccineUa calif ornica Mann.; the green lacewing {Chrysopa cali- 

 fornica Coq.) ; the brown lacewing {Symplierohius angustus Bks.) ; 

 some of the members of the hemipterous family Eednviidce; the 

 internal parasites, Prospaltella aurantii How., Coccophagus lunulaius 

 How., Aspidiotipliagus citrinus Craw., Siguiphora occidentalis How., 

 ApJiyciis innnactdatus How., Alaplus criococci Girault, Physcus ftavi- 

 ventris How., all prey upon this pest. 



THE YELLOW OR CITRUS SCALE. 



C'liri/soiii phalit.s cltriiiKs (Coq.). 

 (Fig. lis.) 



General Appearance. — Flat, circular scales resembling the red scale 

 {Cliry.soiiiphalns aurantii) in shape and size, but are decidedly yellow 

 in color. 



