SOME TROUBLESOME INVADERS 355 



the meshes. If the mites are discovered in time, as they 

 are crawling up the sides of the house, they may be checked 

 by spraying the walls with kerosene oil. It will take 

 thorough, vigorous action to check them. 



After they have once entered a house, spraying them 

 wherever possible with benzine will kill all it hits. The 

 rooms may be fumigated with sulfur, at least 2 pounds 

 to every 1000 cubic feet of space, but it must be remembered 

 that the fumes may injure nickel and brass fittings, gilt 

 picture frames, and wall paper. Fresh buhach sprinkled 

 liberally about the room and actually on the mites when- 

 ever possible will kill many of them. 



If the mites are discovered on the lawn, near the house, 

 they should be killed by spraying the grass with a 10 

 or 12 per cent solution of kerosene emulsion. 



REFERENCES TO ECONOMIC LITERATURE ON THE 

 CLOVER MITE 



1881. LINTNER, J. A. Mites in clothing. Country Gentleman, 



June 9, 1881, XLVI, p. 376. 

 1889. WEBSTER, F. M. Notes on species of Bryobia infesting 



dwellings. Bull. 25, Ind. Expt. Stat., p. 15. 

 1889. RiLEY-HowARD. Late autumnal occurrence of mites in 



great numbers. Insect Life, Vol. 1, p. 252. 



1889. WEBSTER, F. M. Notes on a species of Bryobia infesting 

 dwellings. Insect Life, Vol. 1, p. 277. 



1890. RILEY-HOWARD. Abundance of Bryobia pratensis. Insect 

 Life, Vol. 2, p. 278. 



1890. LINTNER, J. A. Bryobia pratensis infesting a dwelling- 

 house. Sixth Rept., Ins. N. Y., p. 158. 



1890. RILEY-MARLATT. The clover mite (Bryobia pratensis). 

 Insect Life, Vol. 3, p. 45. 



1891. LINTNER, J. A. Bryobia pratensis, Dist. food plants, etc. 

 Seventh Rept., Ins. N. Y., pp. 321-324. 



