(;ONTENTS. 7 



The Regulative Action of Birds upon Insect Oscillations 3 



Turdida- (Thrushes), 5.— SaxicoHdty (Bluebirds), 8.— Paridix> (Chica- 

 dees), 8.— Troglodytida' (Wrens), 8.— Mniotiltida' (Warblers), 9. 

 — Yireonida' (Vireos), 10. — Ampelida' (Wax-wings), 11. — Hirun- 

 dinida' (Swallows), 11. — Fringillidai (Finches), 11. — Icterida^ 

 (Blackbirds), 13. — Tyrannida' (Flycatchers), 15. — Cuculidne 

 (Cuckoos), 16.— Picida' (Woodpeckers), 16. — Columbida' (Doves 

 and Pigeons). 16. — Perdicida' (Quails and Partridges). 17. — Dis- 

 cussion, 17. 

 Tables of the Food . . . . . .22 



Genera and Species Recognized in the Food. . . 27 



The Food Relations of the Carabid.e and Coccinellid.e . 33 

 Introduction. 3o. — Family Carabida*. 37. — The Family as a Unit, 46. — 

 Family Coccinellida'. 51.— The Family as a Unit, 54. — Suflficioncy 

 of Data, 55.— Relations to Birds, 56. — List of Genera and Spe- 

 cies of Cicindelida^ and Carabida^ eaten by 423 of the Thrushes 

 and the Bluebird, 57.— Tables of Food, 59. 

 The Food op the Smaller Fresh Water Fishes . . 65 



Introduction, 65. — Family Aphredoderida*, 66. — Family Cottida^, 67. — 

 Family Gasterosteida", 68. — Family Atheriuida^ 69. — Family 

 Cyprinodontida', 70. — Family Umbrida, 73. — Family Cyprinida', 

 74. —Food of the Young, 76.— Summary for the Family, 90. — 

 Comparison of the Groups, 91. — Table of Food, 93. 

 The First Food of the Common White-Fish (Corecionus clupe- 



iFORMis. Mitch.) . . . . .95 



