. Annual report of the Fruit Growers' Association of Ontario, 1902 . 3 4. Fig. Oyster-shell Bark-louse. B. Atiackirtg the Trunk, Branches, and Tiviqs : 1. Producing longitudinal slits in the bark ; eggs under the edges of the Tree-hopper (Ceresa bubalus). See Fig. 7» i902 ENTOMOLOGICAL SOCIETY. 103 a. Fixed to Baric : 1. Producing an ashy-gray -incrustation on the bark ; scales round, and gray and black. San Jose scale (Aspidiotus perniciosus). See Figs. 4 and 5. 2. Bark rough with mussel-shaped scales. Oyster-shell Bark-Louse (Mytilaspis pomorum). Fig. 65. 3. Bark scurfy wi
. Annual report of the Fruit Growers' Association of Ontario, 1902 . 3 4. Fig. Oyster-shell Bark-louse. B. Atiackirtg the Trunk, Branches, and Tiviqs : 1. Producing longitudinal slits in the bark ; eggs under the edges of the Tree-hopper (Ceresa bubalus). See Fig. 7» i902 ENTOMOLOGICAL SOCIETY. 103 a. Fixed to Baric : 1. Producing an ashy-gray -incrustation on the bark ; scales round, and gray and black. San Jose scale (Aspidiotus perniciosus). See Figs. 4 and 5. 2. Bark rough with mussel-shaped scales. Oyster-shell Bark-Louse (Mytilaspis pomorum). Fig. 65. 3. Bark scurfy with white scales. Scurfy Bark Louse (Chionaspis furfnrus). Fig.
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