﻿VI TABLE OF CONTENTS. 



LeConte's Pine Worm 32 



A more general P"eeder than Abbot's Species, 32 — The close Kesemblance of the Worms, 

 33 — How they difl'er, 32— Descriptive, 33 — Other Species of the Genus, 34. 



The Colorado Potato-beetle 34 



Injiu-y in the West in 1876, 34 — Spread of the Insect during the Year, 34, 35~Its great 

 Abundance on the Atlantic Coast, 35— Rate at which It traveled since 1859, 37 — An 

 Average of 88 Miles a Year, 39— How it ti-aveled, 37 — Principally in the Beetle 

 State, and greatly assisted by Man, 37 — Its Migrating Habit, 38— Area invaded by It 

 nearly 1,500, COO square Miles, 38 — Causes which limit Its Spread, 38- Will It reach 

 the Pacific Slope?, 39— How It afl'ected the Price of Potatoes, 39— The Modification 

 It has undergone, 40 — A Mite Parasite added to Its Natural Enemies, 41 — Its Intro- 

 duction to Europe, 42 — A living Specimen found last Summer in the Bremen Dock 

 Yards, 42 — Could It live and multiply in Europe?, 43 — Action taken by Europern Gov- 

 ernments to prevent Its Introduction, 44 — Considei-ation of the Kearney " Potato 

 Pest Poison," 45. 



The Araiy Worji 47 



Further Notes and Experiments thereon, 47— Two Generations produced annually at St. 

 Louis, and a probable third Generation, exceptionally, 48— Summary of Its Natural 

 History, 49. 



The Wheat-head Army Worm 50 



A new Enemy to Wheat, 50— First Complaint of It in the East, 51— First Appearance in 

 Kansas, 51 — Habits and Natural History, 52 — The Egg differs from that of the Army 

 Worm, 53 — Wherein the Worm is distinguished from Its destructive Congener, 54 — 

 Two Broods eacli Year, 54— Natural Enemies, .54— Remedies , .55— Descriptive, 55. 



The Kocky Mountain Locust 57 



It continues to interest the People of tlie West, 57 — Previous Opinions justifled, 57 — The 

 Invasion of 1876, 59 — Few in British America, .59 — Condition of things in Montana, 

 59— In Wyoming, .59— In Dakota, 59— In Minnesota, 60— In Colorado, 62— In Iowa, 

 03— In Nebraska, 64 — in Kansas, 65— In Missouri, 66— In Indian Territory, 76— In 

 Texas, 76— In Arkansas, 76 — Locusts and Alcali Soil, 61— Good done by Gov. Pills- 

 bury of Minnesota, 61 — Flights in opposite Directions at the same Time, 66— Counties 

 in Missouri that were overrun, 67 — Detailed Reports from Counties in Missouri, 68 — 

 Andrew Co., 68— Atchison Co., 68— Barry Co., 68— Barton Co., 69— Bates Co., 

 69— Benton Co., 69— Buchanan Co. , 69— Cass Co., 69— Cedar Co., 70— Caldwell 

 Co., 70— Clay Co., 70— Dade Co., 70— DeKalb Co., 70— Gentry Co., 70— Greene 

 Co., 71- Harrison Co., 71— Henry Co., 71- Hickory Co., 71— Holt Co., 71 — 

 Jasper Co., 72 — Jackson Co., 73— Johnson. Co., 73 — Lafayette Co., 73— Lawrence 

 Co., 73— McDonald Co., 74 — Newton Co., 74— Nodaway Co., 74— Pettis Co., 

 V4_piatte Co., 74— Polk Co., 75— Ray Co., 75— St. Clair Co., 7.5— Vernon Co., 75— 

 Red-legged Locust troublesome in East Missouri, 68 — Destination of the depart- 

 ing Swarms of 1875, 77 — They reached into British America, 78 — Source of the 

 Swarms of 1876, 79— Eastern Line reached, 80— Rate at which the Insects Spread,. 

 80 — Direction of Flight, 81— Influence of Wind in determining the Course of Locust 

 Swarms, 81 — Locust Flights East of the Mississij)pi, 81— Geographical Range of Spe- 

 cies, 82— Causes which limit the Spread of the R. M. Locust, 83— Flights of Acridium 

 Americanum, 84 — Does the Female of the R. M. Locust lay more than one Egg-mass, 

 8,5- Ilowthe Epgs are laid, 86— Philosophy of the Egg-mass, 87— How the Young 

 Locust escapes from the Egg, 88 — How It escapes from the Ground, 90 -Additional 

 Natural Enemies, 91— Animals which destroy the Eggs, 91— The Anthomyia Egg- 

 parasite, 92 — The Common Flesh-fly, 9.5 — Other undetermined Enemies of the 

 Eggs, 90- Insects which destroy the active Locusts, 98— Experiments with the 

 Eggs and Conclusions therefrom, 99 — Experiments to test the Eflects of alternately 

 Freezing and Thawing, 99 — Experiments to test the Influence of Moisture upon. 



