82 
INDEX. 
Fage. 
Birds, spreading San Jose scale 57 
Blackberry, common. (See Bub"* nigrobaccus.) 
Box. (See Buxus. I 
Buxus, food plant of San Jose scale 38 
Castarn a arm ricana, food plant of San Jose scale 38 
Catalpa bignonoides, food plant of San Jose scale 38 
common. (See Catalpa bignonoides.) 
sp. , food plant of San Jose scale .'. 38 
Ceariothus americanus, food plant of San Jose scale 38 
Celtis occidental}*, food plant of San Jose scale 38 
Cercidiphyllum japonicum, food plant of San Jose scale 38 
Cherry. (See Prunus avium, P. cerasus, and P. pumila var. besseyi.) 
Chestnut. (See Castanea amerkana.) 
Chilocorus bivulnerus, comparison with Chilocorus similis 65-66 
enemy of San Jose scale 62 
similis. (See also Ladybird, Asiatic) . 
comparison with Chilocorus bivulnerus 65-66 
Chinese scale. (See Scale, San Jose, and Aspidiotus perniciosus. ) 
Chionaspis americana, parasitized by Physcus varicomis 60 
furfurus, parasitized by Ablerus clisiocampse 61 
pinifolise, parasitized by Aphelinus mutilospidi* 59 
>pi 1 reus, parasitized by Physcus varicomis 60 
Chokeberry, black. (See Sorbus melanocarpa. ) 
Chokecherry. (See Primus virgirtiana.) 
Chrysomphalus aurantii var. dtrinus, parasitized by Aspidiotiphagus citrinus 60 
ficus, parasitized by Aspidiotiphagus dtrinus. 60 
Citrus aurantium. (See also Orange, and Citrus fruits. ) 
food plant of San Jose scale 38. 41 
fruits and San Jose scale 42-43 
trifoliata, food plant of San Jose scale 36. 41 
Climate, affecting spread of San Jose scale 33-34 
Collops quadrimaculatus, enemy of San Jose scale 64 
Color protection, of San Jose scale 57 
Cornus alba var. sibirica, food plant of San Jose scale 36 
alt em 1 [folia, food plant of San Jose scale 38 
amoin um, food plant of San Jose scale - 39 
baileyi, food plant of San Jose scale 36 
candid issima, food plant of San Jose scale 39 
circinata, food plant of San Jose scale „■ 39 
florida, food plant of San Jose scale 39 
sanguinea, food plant of San Jose scale 36 
stolonifera, food plant of San Jose scale - - - ;;s 
( 'oton< aster sp., food plant of San Jose scale 36. 42 
vulgaris, food plant of San Jose scale 
Crab apple. (See Pyrus sp. ) 
Cratxgus coccinea, food plant of San Jose scale 
cordata, food plant of San Jose scale - 
crus-galli, food plant of San Jose scale 
vyacantha, food plant of San Jose scale 
sp., food plant of San Jose scale 
Currant. (Sec Eibes rubrum, /.'. nigrum, and /»'. aureum.) 
Cydonia japonica, food plant of San Jose scale 3 
vulgaris, food plant of San Jose scale - *- 3 
