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Family Scolytidx or Bark-beetles; Engraver-beetles 220 



The Apple Bark-beetles [Monarthrum mali Fitch) 222 



The Pear-blight Beetle {Xyleborus pyri Peck) 226 



The Fruit Bark-beetle (Scolytus rvgulosus Ratz. ) 229 



The Hickory Bark-beetle (Scolytus 4-spinosus Say) 231 



Family Anthribidx or Fungus-beetles 234 



