190S 



ENTOMOLOGICAL SOCIETY. 



103 



a. Fixed to Bark : 



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 furfurus). Fig. 66. 



Fig. 66. The Scui-fv Baik-louse. 



Fig-. 67. Saperda Candida : (a) borer ; {b) ]iupa ; (c) >)eetle. 



Fig. 68. Osmoderma Fig. 69. Scolytus 

 seabra. " beetle. 



b. Making Tnniiels in the Wood : 



1. Large square-headed legless borer, at or near the ground in tunnels, with saw-dust- 

 like excrement. 



Bound-Headed Borer (Saperda Candida). Fig, 67. 



