TWO LEAFHOPPERS mjUKIOUS TO APPLE NURSERY STOCK. 35 



(IG) Gakman, it. 



1908. Spraying apple trees. Kentucky Agr. Exp. Sta. Bui. ];{:5. 



(17) Gibson, A. 



1909. Insects of the year 1908 at Ottawa. In 39th Rept. Ont. Ent. Soc, p. 



110-120. 



(18) Webster, R. L. 



1910. The apple leafhopper. Iowa Agr. Exp. Sta. Bui. 111. 



(19) Weiss, II. B. 



1912. Insect Record. In New Jersey Agr. Exp. Sta. Rept., p. 423-450. 



(20) Webster, R. L. 



1915. Potato insects. Iowa Agr. Exp. Sta. Bui. 155. 



the rose leafhopper. 



(21) Linnaeus, 0. 



1758. Systema Naturae. Ed. 10, v. 1. 



(22) Fitch, A. 



1851. Catalogue with references and descriptions of the (homopterous) insects 



collected and arranged for the State cabinet of natural history. New 

 York. In Fourth Ann. Rept. Sta. Cab. Nat. Hist., Albany, p. 43-69. 



(23) Harris, T. W. 



1852. Insects injurious to vegetation. Ed. 2. 



(24) GiARD, A. 



1889. Sur une galle produite chez le Typhlocyba rosae- L. par une larva 

 d'Hymenoptfere. (p. 79-82.) 

 Sur la castration parasitaire des Typhlocyba. (p. 708-710). /w Comptes 

 Rendus Ac. Sc. Paris, v. 109. 

 (26) Weed, C. M. 



1889. Notes on some little known injurious insects. In Oliio Agr. Exp. Sta. 

 Bui., V. 6, no. 2, 2nd ser. 



(26) Parrott, p. J. 



1909. Scientific notes. In Jour. Econ. Ent., v. 2, p. 79. 



(27) 'Wilson, H. F., and Childs, L. 



1915. The rose leafhopper as a fruit pest. In 2nd Bien. Crop Pest Rept., 

 Ore. Agr. Coll. Exp. Sta. 1913-1914, p. 189-194. 



(28) Brittain, W. H. 



1915. Some Hemiptera attacking the apple. In Proc. Ent. Soc. Nova Scotia, 

 August 3, p. 7-47. 



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