INDEX. 85 
Page. 
Petroleum, crude, remedy for San Jose scale 77 
soap emulsions, remedies for San Jose scale 78-79 
Phoetenia glauca, food plant of Aspidiotus perniciosus var. andromelas 55 
Photinia villosa, food plant of San Jose scale 39 
Physcus varicornis, is it parasite of San Jose scale? 58, 60 
scale hosts 60 
Physocarpus opidifolius, food plant of San Jose scale 39 
Picea alba, food plant of San Jose scale 39 
Plum. (See Prunus maritima, P. domestica, P. triflora, P. cerasifera var. atro- 
purpurea, and P. hortulana. ) 
Poplar. (See Populus sp., P. deltoides, and P. nigra var. italica.) 
Populus deltoides, food plant of San Jose scale. 37 
nigra var. italica, food plant of San Jose scale 37 
sp. , food plant of San Jose scale 37 
Privet. (See Ligustrum vulgare and L. ovalifolium. ) 
Prospalta aurantii, parasite of San Jose scale 58, 60 
Protective resemblance, in San Jose scale 57 
Prunus amygdalus, food plant of San Jose scale 37 
armeniaca, food plant of San Jose scale 37 
avium., food plant of San Jose scale 37 
cerasifera var. atropurpurea, food plant of San Jose scale 37 
cerasus, food plant of San Jose scale - 39, 41 
domestica, food plant of San Jose scale 37 
hortulana, food plant of San Jose scale 37 
japomca, food plant of Jan Jose scale " 37 
maritima, food plant of San Jose scale 37 
persica, food plant of San Jose scale 37 
pissardi. (See Prunus cerasifera var. atropurpurea.) 
pumila, food plant of San Jose scale 37 
var besseyi, food plant of San Jose scale. 37 
serolina, food plant of San Jose scale 37 
triflora, food plant of San Jose scale 37 
rirginiana, food plant of San Jose scale 37 
Pseudoiveisea suturalis=Microiceisea siduralis 64 
Ptelea trifoliata, food plant of San Jose scale " 37, 41 
Pyrus baccata, food plant of San Jose scale 37 
communis. (See also Pear.) 
food plant of San Jose scale 37 
mains. (See also Apple. ) 
food plant of San Jose scale . „ 37 
sinensis. (See also Pear, Kieffer. ) 
food plant of San Jose scale. 37 
sp. , food plant of San Jose scale 37 
Quince. (See Cydonia vulgaris and C. japonica.) 
Raspberry, red. (See Rubus strigosus.) 
Rhizobius debilis, enemy of San Jose scale ,.„.,......„._..„.. 62 
lophanthx, enemy of San Jose scale .... j-.. 62 
Rhodotypos kerrioides, food plant of San Jose scale 39 
Rhopoideus citrinus, parasite of San Jose scale 58, 61-62 
Rhus cotinus, food plant of San Jose scale 39 
sp. , food plant of San Jose scale 39 
Ribes aureum, food plant of San Jose scale 37 
nigrum, food plant of San Jose scale 37 
