BIBLIOGRAPHY OF ECONOMIC ENTOMOLOGY. 155 



1301. EILEY, C. V. Continued. 



The grape-vine Colaspis, Colaspis fiavida 81 



Fitch's account of the insect, 82 Varieties of the beetle, 82 The 

 larva in all probability attacks sometimes that of the leaf-folder, 

 82 It lives on the roots of the strawberry, 82 Larva of the Eu- 

 ropean Colaspis barbara,82 Difference in habits of larvae of allied 

 species, 83 Singular characters of the larva of the grape-vine 

 Colaspis. 83 Work of the larva on strawberry roots, 83 Rem- 

 edy, 84 Description of the larva, 84. 



The grape-leaf gall-louse, Phylloxera vastatrix 84 



Its life-history not yet fully studied, 84 Previous accounts of the 

 insect by Fitch, Shinier, and Walsh, 85 The root disease in ' 

 France, 85 The Phylloxera vastatrix recognized as the cause of 

 this disease, 85 Identity of the gall-louse with the root-inhabit- 

 ing insect, 86 The American and European insects are identical, 

 86 Remedies tried in France, 86 The disease directly caused 

 by the Phylloxera, 87 Injury done by the Phylloxera in Mis- 

 souri, 87 Forming of the gall, 87 Propagation of the lice and 

 multiplication of the galls, 88 The gall-lice descend in the lat- 

 ter part of the season to the roots, 88 Change of the insect after 

 passing from the leaves to the root, 88 Questions still to be settled 

 in the life-history of the Phylloxera, 88 Eare occurrence of the 

 winged form, 89 The insect can be transported from one place to 

 another on roots, 89 It hibernates on the roots, 89 Grape-vines 

 that should be planted, 89 Number of indigenous species of the 

 grape-vine, 90 Grape-vines which are most seriously infested 

 with the grape-leaf louse, 90 Danger in planting the Clinton 

 among other grapes, 91 Insects acquiring different food-habits 

 as illustrated in the apple-maggot and the pine-leaf scale, 92 

 The different forms of the grape-leaf louse, 93 Discussion on the 

 proper place of the insect in the classification, 93 On Dr. Shi- 

 mer's proposed new families Dactylosphceridce and Lepidosaphidce, 

 93 Objections to Fitch's specific name vitifolice, 95 Identity of 

 the European with the American insect, 95 The apple-root louse 

 is identical with the woolly Aphis, 95 The gail-iuhabiting form 

 of the Phylloxera identical with the root-inhabiting type, 96 

 Charactersof the genus Phylloxera and its place in the system, 96. 



THE COLORADO POTATO-BEETLE AGAIN, Doryphora W-lineata 79 



Its onward march, 97 It invades the Dominion of Canada, 97 

 How it crossed Lake Michigan, 97 It will probably spread 

 through Ontario unless preventive measures are taken, 98 Ex- 

 cellent chance to prevent its spread in Canada, 98 The Paris 

 green remedy, 99 It is efficient if judiciously applied, 99 It 

 does not affect the tuber, 99 Natural checks to the increase of 

 the potato-beetle, 100 The great Lebia destroying the larvae, 

 100 Bogus experiments, 100 The true remedy, 101 How to 

 prevent the insect from becoming too numerous, 101 Planting 

 eaYly varieties of potatoes, 101. 



THE CODLING-MOTH AGAIN, Carpocapsa pomonella 101 



Hay-bands around the trunk of the tree* more effectual than rags 

 placed in the fork, 102 The codling-moth is single-brooded in 

 the more northern countries, but double-brooded in the latitude 

 of St. Louis, 102 Sexual differences of the moth, 103 Sexual 

 characters in the genera Argynnis and Grapta, 103 The codling- 

 moth also infests peaches, 103. 



