206 BIBLIOGRAPHY OF ECONOMIC ENTOMOLOGY. 
1558. Riley, C. V. — Continued. 
The Colorado potato-beetle —Continued. 
Area invaded by it. 24 
Causes wbicb limit its spread. 25 
Intense heat in the South, 25—Excessive dryness in the mountains, 
26. 
How it affected the price of potatoes. j. .. 26 
The modification it has undergone. 27 
Its natural history. 27 
First made known in 1863, 28—The female capable of laying 1,000 
eggs, 29—Three broods a year, 28. 
Its poisonous qualities. 29 
Exhalations from the crushed bodies injurious. 29. 
Its food-plants. 30 
The number increases with each year, 32—Varieties of potatoes 
preferred, 33. 
The beetle eats as well as the larva... 33 
Its natural enemies. 34 
Birds which feed upon it, 35-36—Domestic fowls, 36—Reptiles, 36— 
Spiders and ■ ites, 36-38—True insects, 39—Rust-red social wasp, 
40—Lady-birds, 40-43—Ground-beetles, 44-45—Rove-beetles, 46— 
Blister-beetles, 46—Soldier-bugs, 47-51—Tachina-fly, 52—Asilus- 
flies, 53. 
Remedies... 54 
Encouragement of natural enemies, 54—Preventive measures, 54— 
Mechanical means of destruction, 55—Pincers for, 56—Sun-scald¬ 
ing, 56—Horse-machine, 57—Machines for collecting, 58, 59—Poi¬ 
sonous applications to the plant, 60—Paris green, 61—Different 
modes of using Paris green, 62-65—Other poisonous applications 
tested, 66—Patent poisons, 68. 
The use of Paris green. 69 
Its influence on the plant, 70—Its influence on the soil, 71—Its in¬ 
fluence on man indirectly through the soil or through the plant, 74. 
Bogus experiments*.... 75 
Alarm about the insect abroad. 76 
Unnecessary prohibition of traffic in American potatoes, 77—How 
the insect will most likely get to Europe, 78—The chances of its 
getting there, 79-82—Could it become acclimated there ?, 82. 
Nomenclature. 83 
The bogus Colorado potato-beetle, Doryphora juncta . 85 
It has always existed east of the Mississippi, 85—It never attacks 
the cultivated potato, 85—Easily confounded with its potato¬ 
feeding congener, 86—How the two differ, 86-88. 
OTHER INSECT FOES OF THE POTATO. 
The stalk-borer, Gortyna nitela . 90 
Habits, 90—Remedy, 91. 
The potato stalk- weevil, Trichobaris trinotata . ... 92 
Habits, 92—Remedy, 93. 
The potato or tomato worm, Protoparce celeus ... 93 
Habits, 94—Remedies, 95—Parasites, 96. 
Blister-beetles. 96 
The striped blister-beetle, Epicauta vittata . 97 
The ash-gray blister-beetle, Macrobasis unicolor . 98 
The black-rat blister-beetle, Macrobasis unicolor ............. 99 
* 
