294 POMONA COLLEGE JOURNAL OF ENTOMOLOGY 



scale, red scak", and yellow scale were located in a nuniljer of ])laces where 

 they were never thought to have existed. 



In Ventura County the mealy bug was thought to be the onl_\' real dan- 

 gerous pest. Purple and red scales were known to exist in only two lo- 

 calities. A tree-to-tree inspection located mealy buy in 6 localities where it 

 was not known to exist. Red scale in two new localities and jjurple scale 

 in two districts miles from the known infestation. 



Infestations — The owner of every tree or orchard, which is infested with 

 mealy bug, should be served with an official C|uarantine notice forbidding 

 him to remove, give away, or sell any fruit without first getting a permit 

 from the Horticultural Commissioner, or his deputies. 



Infested fruit cannot by law be shipped to any other district within the 

 State, and it should not be shi])ped to any citrus district outside of the State, un- 

 less thoroughly treated and hand washed in a 30'/r solution of denatured alcohol 

 and inspected by a lawful inspector after treatment. To the Eastern market 

 the owner takes his own risks in shipping such fruit. 



Picking Boxes. In a district partly infested with this pest, every box 

 vvhich is used as a regular picking box. or which has ever been in a packing 

 house which handles infested fruit, must be thoroughly disinfected just before 

 entering the orchards. These boxes may be treated in any of three ways, viz., 

 fumigated, emerged in denatured alcohol ( 30'7( ) or steeped for 20 seconds 

 in water maintained at a temperature of 170° F. 



For fumigating, an air-tight compartment may be constructed in the pack- 

 ing house with a top ventilator at the roof. Four ounces of cyanide per 100 

 cubic feet is sufficient to destroy all life. The bo.xes should not be removed 

 except when taken directly to the orchards. 



A large tank should be filled with denatured alcohol if this method is 

 to l)e used to insure the complete immersion of every box. 



If hot water is to be used a constant fire should be kept under the water 

 lank, so as to maintain a constant temperature. 



Picking boxes should not be allowed to be shipped from an infested 

 to a clean district under any circumstances, neither should new boxes filled 

 with fruit be allowed to enter a clean district from an infested area, even 

 though the fruit came froiu an uninfested orchard. All exchanges of fruit 

 or boxes from infested districts must be prohibited. 



Picking Crews — A picking crew should not be allowed to work in a 

 district ])artly infected with mealy bugs unless under these conditions: 



1. All clean orcliards must be picked consecutively before entering tliose 



infested. 



2. Every orchardist must furnisli liis dwn ladders, picking sacks, etc. 



3. Every grower liaving mealy Inig in his orcharil nnist funiisli tiie mem- 

 bers of tile |)icking crews with junipers, ii\'er:ills. and caps to lie worn 

 only while picking his own fruit. 



4. .An intelligent and careful man nuist (Hrect the movements of the ])ick- 



ing crew to see th;it llie al)ove regulations are carried nut. 



