BIBLIOGRAPHY OF ECONOMIC ENTOMOLOGY. 155 
1301. Riley, C. V.—Continued. 
The grape-vine Colaspis, Colaspis flavida . 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—Siugular 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 desceud 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—Rare 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 Dactylosphairida! and Lepidosaphidce, 
93—Objections to Fitch’s specific name vitifoliw, 95—Identity of 
the European with the American insect, 95—The apple-root louse 
is identical with the woolly Aphis, 95—The gall-inhabiting 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 10 -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 
early 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. 
