362 Journal of Agricultural Research voi. iii. N0.4 



In southern Arizona there are four generations annually and during 

 extremely mild winters the adult insects are active throughout the 

 season. During colder winter the species hibernates in both the egg 

 and adult stages. 



The alfalfa hopper is little affected by natural enemies and is only 

 reduced in numbers by the variable winter temperatures. The Sonoran 

 redwing was found to feed upon the species. 



The cleaning up of places of hibernation and the eradication of weeds, 

 rubbish, etc., is the only known system that will reduce the numbers of 

 the pest. 



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Descriptions of new North American hemipterous insects, belonging to the 

 first family of the section Homoptera of Latreille. In Jour. Acad. Nat. 

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(2) 1869. StAl, C. 



Bidrag till membracidernas kannedom. In Ofvers. K. Svenska Vetensk. 

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 C. festiiia Say. p. 346, no. s. 



(3) 1869. StAl, C. 



Hemiptera Fabriciana. v. 2, p. 24, Stockholm, 1869. In K. Svenska 

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[Extracts from correspondence regarding a new tomato enemy in Georgia, be- 

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Petite Faune Entomologique du Canada, v. 3, I<esH6miptferes,p. 237. Que- 

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(6) 1890. Smith, J. B. 



Catalogue of Insects Found in New Jersey, p. 441. Trenton, 1890. 



(7) 1890. Van Duzee, E. P. 



Synonymy of the Homoptera described by Say, Harris, and Fitch. In 

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(8) 1894. Coding, F. W. 



Bibliographical and synonymical catalogue of the described Membracidae of 

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1894. 



(9) 1899. COCKERELL, T. D. A. 



Some insect pests of Salt River Valley and the remedies for them, Ariz. 

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