. Economic entomology for the farmer and fruit-grower . Phylloxera vastatrix.—a. unaffected rootlet of grape; b, rootlets with newly-formed galls; c, same, with old and dried-up tissue; dd, groups of the lice on roots and root- lets ; e,/, 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- (oxera, which belongs with Chermes in a sub-family, Chermesina,

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Keywords: ., bookcentury1900, bookdecade1900, booksubjectbenefic, bookyear1906