THE SAN JOSE SCALE 



295 



recently been reported to me by Air. Sirrine, as observed by him 

 on Long Island. 



The following is the list as it now stands. It will doubtless be 

 largely extended by future observations : 



Tiliacm 

 Linden (Tilia). 



Celastracem 



Euonyrans. 



LeguminosoB 



Acacia. 



Bosaeem 



Almond, 



Peach. 



Apricot, 



Plum. 



Cherry. 



Spiraea. 



Kaspberry. 



Kose. 



Hawthorn (Oratmgus\ 



Cotoneaster. 



Pear. 



Apple. 



Quince. 



Flowering Quince. 



SaxifragaccB 

 Gooseberry. 

 Currant. 



Flowering Currant. 



Ehenacem 

 Persimmon (Diospyros). 



(Jrticacm 



Elm. 



Osage Orange 



Juglandace® 

 English Walnut. 

 Pecan Nut. 



Betulacem 

 Alder? (Alnus). 



Salicacem 

 "Weeping Willow. 

 Laurel-leaved Willow 

 Asia). 



(from 



It will be seen from the above that the scale is recorded as occur- 

 ring on plants in ten of the Orders, although one-half of the food- 

 plants named belong to the Order of Rosacea. 



Spread of the Insect 



The natural spread of this scale is not a, rapid one. As the female 

 is unprovided with wings, and is unable to change its position after 

 having become fixed and throughout its entire period of reproduc- 

 tion, the insect can only pass from one tree to another during the 

 few hours that it continues in its active larval stage. Although a 

 rather rapid traveler its range of locomotion would hardly ever carry 

 it to neighboring trees in an orchard, unless the branches should 



