32 INDEX TO MISSOURI ENTOMOLOGICAL REPORTS. 



Page, 

 The Oyster-shell Bark-louse of the Apple 73 



Its occurrence in Missouri, 74 Its appearance in Luray County, Missouri, 

 74 Mr. Hanau's account of its spread, 75 Its occurrence in Southern 

 Missouri, 76 Its occurrence in Mississippi and Georgia, 73 Its ap- 

 pearance in Kansas, 79 It is double-brooded in the South, 79 The 

 waxy secretion of Homoptera, 80 The newly hatched louse, 80 The 

 larval scale, 81 Development of the female scale, 81 Growth of the 

 male scale, 82 The male louse, 83 Rare occurrence of the winged 

 male, 84 Agamic multiplication, 85, Mode of spreading, 85 Food- 

 plants, 86 Varieties of the Apple tree preferred by it, 86 Enemies 

 and parasites, 87 ; Mites, 87; Aphelinns mytilaspidis and Dr. Le Baron's 

 account of its habits, 88 Easy transportation and introduction of 

 the Aphelinus, 90 Remedies, 90 Application of oily substances, 90 

 Bibliographical and Descriptive, 91 The generic name, 91 Siguo- 

 ret's classification of the Coccida, 92 Specific name, 92 Characteris- 

 tics and habits of three allied species, 93 A new name necessary for our 

 apple-tree species, 94 Description of the eggs and the winged male, 

 95 ; of the male and female scale and of the female louse, 96. 



The Pine-leaf Scale-insect 97 



Nature of the malady caused by it, 97 Natural history of the insect, 

 98 The male, 99 There are two annual broods, 99 It is confined 

 to the Pines proper, 100 Natural enemies, 100; The Twice-stabbed 

 Ladybird, 100 ; The Painted Ladybird and description of its larva, 101 

 Remedies, 101 Stripping the old leaves, 102 Application of pow- 

 dered and liquid substances, 102. 



The Hickory Bark -borer 103 



Accounts of the damage caused by it in Missouri, 103 Habits of the Euro- 

 pean Scolytus destructor, 104 Various kinds of Hickory attacked by the 

 Hickory Bark-borer, 105 Its natural history, 105 Natural enemies, 

 106 Descriptions of the Three-banded Spathius, 106 Mr. Cresson's 

 description of Bracon scolytivorus, 106 Remedies, 107 Description 

 of the imago, 107 Is it different from Scolytus 4-spinosus? 107. 



The Rose Chafer 108 



Great damage caused by the beetle in 1872, 108 Remedy, 109 Harris's 

 account of its natural history, 109. 



The False Chinch-bug Ill 



It was not known as injurious before 1872, 111 Accounts of injury done 

 by it, 111 How it differs from the true Chinch-bug, 112 Its probable 

 natural history, 112 Description of imago, larva, and pupa, 113 

 Variation in the imago, 113 Its great abundance in the" Fall of 1872, 

 114. 

 Insects injurious to the Grape-vine 114 



THE GRAPE-VINE APPLE-GALL 114 



The breast bone of Gall-gnat larvte, 114 The gall mistaken for an apple, 

 114 Form of the gall, 115 Habits of the larva, 116. 



THE GRAPE-VINE FILBERT-GALI 116 



Appearance of the gall, 116 Larva of the gall-maker, 117. 



THE GRAPE-VINE TOMATO-GALL 117 



Its curious resemblance to a tomato, 117 Various shapes assumed by it, 

 118 The larva, 118 Enemies of the larva, 118. 



THE GRAPE-LEAF TRUMPET-GALL 118 



Characteristics and occurrence of the gall, 118. 



