82 INDEX. 



Page. 



Birds, spreading San Jose scale „,„„... = ..,..... 57 



Blackberry, common. {See Bubus nigrobaccus.) 

 Box. {See Buxus.) 



Buxus, food plant of San Jose scale 38 



Castanea americana, 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 



Ceanothus americanus, food plant of San Jose scale 38 



Celtis occidentalis, food plant of San Jose scale 38 



Cercidiphyllum japonicum, food plant of San Jose scale 38 



Cherry. (See Primus avium, P. cerasus, and P. pumila var. besseyi.) 

 Chestnut. ( See Castanea americana. ) 



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 Pliyscus varicornis 60 



furfurus, parasitized by Ablerus clisiocampse 61 



pinifolix, parasitized by Aphelinus mytilaspidis 59 



quercus, parasitized by Physcus varicornis 60 



Chokeberry, black. (See Sorbus melanocarpa.) 

 Chokecherry. (See Prunus vlrginiana.) 



Chrysomj)halus aurantii var. citrinus, parasitized by Aspidiotiphagus citrinus 60 



Jicus, parasitized by Aspidiotiphagus citrinus 60 



Citrus aurantium. {See also Orange, and Citrus fruits.) 



food plant of San Jose scale ^ 38, 41 



fruits and San Jose scale - 42-43 



trifoUata, 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 



alternifolia, food plant of San Jose scale 38 



amomum, food plant of San Jose scale 39 



baileyi, food plant of San Jose scale 36 



candidissima , food plant of San Jose scale 39 



circinata, food plant of San Jose scale 39 



fiorida, food plant of San Jose scale 39 



sanguinea, food plant of San Jose scale 36 



stolonifera, food plant of San Jose scale 38 



Cotoneaster sp., food plant of San Jose scale 36, 42 



vulgaris, food plant of San Jose scale 36 



Crab apple. (See Pyrus sp. ) 



Craisegus coccinea, food plant of San Jose scale 37 



cordata, food plant of San Jose scale 37 



crus-galli, food plant of San Jose scale 37 



oxyacantlia, food i)lant of San Jose scale 42 



sp. , food plant of San Jose scale 37 



Currant. (See Ribes ruhrum, R. nigrum, and R. aureum.) 



Cydonia japonica, food plant of San Jose scale 37 



vulgaris, food plant of Sau Jose scale , 37 



