. Economic entomology for the farmer and the fruit grower, and for use as a text-book in agricultural schools and colleges; . Phylloxera vastatrix.—a. unaffected rootlet of grape ; b, rootlets with newly-tormed galls; c, same, with old and dried-up tissue; dd, groups of the lice on roots and root- lets ; <?,y, female pupa, from above and below ; g, h, winged females; i, an antenna ; j, oviparous wingless female and her eggs ; k, root showing location of the eggs. An advance upon those root-living species is found in Phyl- loxera, which belongs with Chcrmes in a sub-family, Chermesina,

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Keywords: ., bookcentury1900, bookdecade1900, booksubjectinsects, bookyear1906