INSECTS 



95 



FIG. 184. Squash bug, or 

 stink bug. 



The following Farmer's Bulletins are available for free 

 distribution to those interested, by the U. S. Department 

 of Agriculture, Washington, D.C. : 



Farmer's Bulletin No. 47, Insects affecting the Cotton Plant; 

 No. 59, Bee Keeping; No. 70, The Principal Insect Enemies of 

 the Grape ; No. 80, The Peach Twig 

 Borer ; No. 99, Three Insect Enemies 

 of Shade Trees; No. 120, The Principal 

 Insects affecting the Tobacco Plant ; 

 No. 127, Important Insecticides; No. 

 132, The Principal Insect Enemies of 

 Growing Wheat; No. 145, Carbon Bi- 

 sulphid as an Insecticide ; No. 146, 

 Insecticides and Fungicides; No. 152, 

 revised, Mange in Cattle; No. 153, Orchard Enemies in the 

 Pacific Northwest; No. 155, How Insects affect Health in Rural 

 Districts; No. 159, Scab in Sheep; No. 165, Silkworm Culture; 

 No. 171, The Control of the Codling Moth; No. 172, Scale In- 

 sects and Mites on Citrus Trees; No. 196, Usefulness of the 

 Toad ; No. 209, Controlling the Boll Weevil in Cotton Seed and 

 at Ginneries ; No. 211, The Use of Paris Green in controlling the 



/ / Cotton Boll Weevil; No. 212, 



' The Cotton Bollworm ; No. 



216, The Control of the Boll 

 Weevil; No. 223, Miscellane- 

 ous Cotton Insects in Texas ; 

 No. 247, The Control of the 

 Codling Moth and Apple Scab. 

 The following bulletins of 

 the Bureau of Entomology may 

 be obtained from the same source at the prices affixed : Bulletin 

 No. 25 (old series), Destructive Locusts, i5c. ; No. i (new series), 

 The Honey Bee, 150. ; No. 3, The San Jos Scale, loc. ; No. 4, 

 The Principal Household Insects of the U. S., ice. ; No. n, The 

 Gypsy Moth in America, 5c. ; No. 14, The Periodical Cicada, 

 i5c. No. 15, The Chinch Bug, ice. ; No. 16, The Hessian Fly, 

 ioc.; Nos. 19, 23, and 33, Insects Injurious to Vegetables, loc. 



FIG. 185. Female plant louse, with and 

 without wings (enlarged). 



