64 



George B. Buckton. — Monograph of the British Aphides. 4 vols. 

 Ray Society, London, 1875-1883. 



This is the latest European work on this family, containing tables for the 

 determination of the genera. 



O. W. Oestluxd. — Synopsis of the Aphididae of Minnesota. <Bul. 



No. 4, Geolog. and Nat. Hist. Survey of Minn., St, Paul, 1887. 

 W. H. Ashmead.— A generic synopsis of the Aphididae, <Entom. 



Amer., 1889, pp. 185-189. 

 T. A. Williams. — Host-plant list of North American Aphididae. 



Spec, Bui. No. 1, Univ. Nebr., Dept, Eritom., 1891. 



ALEURODIDiE. 



A. L. Quaintance. — Contributions toward a monograph of the 

 American Aleurodidse. <Bul. No. 8, Technical series, Div. 

 Entom., U. S. Dept. Agric, 1900, pp. 1-61. 



COCCIDJ3. 



V. Signoret. — Essai sur les Cochenilles. <Ann. Soc. Entom. de 

 France, 1868-1876. 



J. H. Comstock.— Report on scale insects. < Annual Report of the 

 Commissioner of Agriculture for the year 1880, Washington, 1881, 

 pp. 276-349, pis. 



J. H. Comstock. — Second Report on scale insects, including a mono- 

 graph of the subfamily Diaspinee of the family Coccidae and a list, 

 with notes, of the other species of scale insects found in North 

 America. <Second Report of the Cornell University Experi- 

 ment Station, 1882-83, Ithaca, N. Y., 1883, pp. 47-143, Pis. I-IV. 



W. H. Ashmead. — A generic synopsis of the Coccidse. <Trans. 

 Amer. Entom. Soc, 1891. pp. 92-102. 



T. D. A. Cockerell. — Tables for the determination of the genera of 

 Coccida?. <Can. Entom., 1899, pp. 273-279; 330-333. 



r j D. A. Cockerell. — A check-list of the Coccida^. <Bul. 111. St. 

 Lab. Nat. Hist., Vol. IV (1896), pp. 318-339. 



T. D. A. Cockerell. — First supplement to the check-list of the Coc- 

 cidse. <Bul. 111. St. Lab. Nat, Hist., Vol. V (1899), pp. 389- 

 398. 



T. D. A. Cockerell. — A check-list of the Nearctic Coccidae. <Can. 

 Entom., 1894, pp. 31-36. 



T. D. A. Cockerell. — Table of North American Kermes, based on 

 external characters. <Psyche, Vol. 9 (1900), pp. 44-45. 



W. Newell. — On the North American species of the subgenera 

 Diaspidiotus and Hemiberlesia, of the genus Aspidiotus. <Con- 

 trib. Dept. Zool. Entom., Iowa St. Coll. Agric. and Mech. Arts, 

 No. 3, August, 1899. 



