83 



J. B. Tyrell. — On some Canadian Ectoparasitic Sarcqptidae. <Ott. 

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H. Garman. — The Ph} r topti and other injurious plant mites. <Twelfth 

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 of Ills., 1883, pp. 123-143. 



A. Nalepa. — Eriophyidas (Phytoptidae). <Das Tierreich, 1 Liefe- 

 rung, 1898, pp. 74. 



No reference to the American species. 



N. Banks. — The Red Spiders of the United States (Tetranychus and 

 Stigmseus). <Bul. No. 8, techn. ser., Div. Entom. U. S. Dept. 

 Agric., 1900, pp. 65-77. 



F. Koenike. — Nordamerikanische Hydrachniden. <Abh. Ver. Bre- 

 men, XIII, pp. 167-226 (1900). 



R. H. Walcott. — On the North American species of the genus Atax. 

 <Trans. Amer. Micr. Soc, XX, 1899. 



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