INDEX. 99 
, Page. 
Grape root, worm as affecting vineyards in Lake Erie Valley 57-39 
beetle, beetles mistaken therefor 16-19 
related thereto 15-16 
description 21 
destruction 83-90 
seasonal history 22-33 
bibliography 93-97 
California. (See Adoius obscurus.) 
control measures 59-83 
cultural method for destruction of pupae 61-C3 
description of stages 19-21 
destructiveness 14-15 
development and feeding of larva before wintering 35-C6 
distribution 12-13 
egg deposition, feeding before and after it 25-28 
mating and its bearing upon it 28 
period for season of 1909 Zl-i2 
process 28 
variation in number of eggs per cluster 29 
depositions, numbers by individual females 29 
description 19 
incubation period 33-C5 
eggs, number per cluster, variation 29 
female beetle CO 
emergence of beetle 22-25 
experimental and rearing methods <4-C0 
feeding and development of larva before wintering 35-.' 6 
of beetle before and after egg deposition 25-28 
larva in spring 37 
food plants 13-14 
history 10-12 
injury, character 14-15 
insect enemies, parasitic 51-57 
predaceous 50-51 
introduction 9-10 
larva, description 19-20 
seasonal history 35-39 
life cycle as determined by rearing 40-41 
history, seasonal variations 41-44 
studies, summary 50 
longevity of male and femals beetles 32-33 
mating and its bearing on egg deposition 28 
natural enemies 50-57 
occurrence of larva? in different soils 36 
origin 12 
parasitism, double 56-57 
poison sprays against beetle in cages, experiments 64-435 
field, effect 63-64.70-75 
experiments 66-68 
position of pupa in cell 39 
post-larval stage 38-39 
preface 3-4 
preventive measures, evolution 53-61 
pupa, description 20-21 
destruction 61-63, 90-91 
seasonal history 33— 10 
pupal cell, time and making 37-38 
period, duration 40 
pupation in field and in breeding cages, time 33— 10 
process 39 
rearing and experimental methods 44-50 
recommendations for destruction of beetles 89 
pupa? 90-91 
remedial measures for control 53-89 
renovation experiment on old vineyard 75-SO 
young vineyard S0-S3 
