31 



Ebenaceae] Diospyros kaki. 



Euphorbiaceaa ... Phyllanthus ep. 



Lauraceae *Persea gratissima (Avocado Pear). 



Leguminosae * Acacia decurrens (Wattle), *Bauhinia spp., 



Ceratonia siliqua. 



LiliacesD Aloe sp. 



Lythraceae , ... Lawsonia alba (Henna). 



Malvaceae Gossypium sp. (Cotton). 



Moraceae *Ficus nitida, F. sycomorus, Ficus spp. 



Musaceae Musa sapientum (Banana). 



Myrtaceae *Eucalyptus sp., Eugenia jambusa, Myrtus 



communis. 



Oleaceae Jasminum, sp., *0lea sp. (Olive). 



Palmaceae Latania sp., Phoenix dactylijera (Date Palm). 



Punicaceae Punica granatum (Pomegranate). . 



Rosaceae Eriobotrya japonica (Loquat), Prunus dome- 



stica (Plum), Pyrus inalus (Apple), Rosa 



sp. (Rose). 



Rubiaceae Adina cord/if olia. 



Rutaceae *Citrus spp. 



Vitaceae Vitis vinifera (Vine). 



PART OF PLANT ATTACKED. 



The leaves and fruits ; young stems are only found attacked 

 very rarely. 



REMARKS. 



All species of Citrus grown in Egypt have been found to be 

 attacked to a greater or lesser degree by the Black Scale ; oranges, 

 bitter oranges, and mandarines heavily attacked, limes and lemons 

 less so. Ficus nilida and Bauhinia sp. are heavily attacked. This 

 scale has proved a very serious pest in Egypt and caused a severe 

 setback to citrus growing. A garden in which the attack is slight 

 becomes moderately infected in one year and 'heavily infected in 

 two years, the value of the crop being reduced to thirty per cent or 

 even less of its original value. 



In Egypt large areas of gardens which otherwise would have 

 borne good crops have become unprofitable owing to the attack of 

 this scale and have been cut down. Unfortunately no figures are 

 available to show the exact areas, but it is probable that during the 

 last ten years in the one Province of Qalyubiya not less than 1,000 

 feddans of orchards have been cut down as' the result of the ravages 

 of this pest. 



Apart from this capital loss the black scale has probably caused 

 an average annual loss during the same period of about L.E. 100,000 

 in the gardens left standing. 



Very shortly after the formation of a Department of Agriculture 

 in Egypt in 1911, Dr. L. H. Gough, the first Entomologist to be 



