HEMIPTERA. 87 



MEMBRACID.'E. 



Stal, C. — Biclrag till Membracidernas Kannedom. < Of vers. K. 

 Vet.-Akad. Forh., 18G9, pp. 231-300. 



GoDiNG, F. ^y. — Bibliographical and synonymical catalogue of the 



described Membracidse of North America. . <Bul. 111. St. Lab. 



Nat. Hist., III. pp. 391-482, 1894. 

 A synopsis of the subfamilies and genera of the Membracidse 



of North America. < Trans. Amer. Ent. Soc, xix, pp. 253-260, 



1892. 



Van Duzee, E. P. — Studies in North American Membracidae. <Bul. 

 Buffalo Soc. Nat. Sci., ix, pp. 29-129, 1908. 

 Tables to geuera aud most of species. 



PSYLLIDiE. 



Low, F. — Zur Systematik der Psylloden. <Verh. k. k. zool.-bot. Ges. 

 Wien, 1878, pp. 585-610. 



Characteristics aud tables of the European subfamilies and genera. 

 Supersedes all previous classifications. 



AsHMEAD, W. H. — On the Aphididae of Florida, with descriptions of 

 new species. Family Psyllidse. <Can. Ent., xiii, pp. 220-225, 

 1881. 



Gives a list of the North American species, with descriptions of several 

 new ones. 



Riley, C. V. — Notes on North American Psyllidee. <Proc. Biol. 

 Soc. Wash., II, pp. 67-79, 1884. 



A list of the North American Psyllidse and descriptions of new genera 

 and species. 



Mally, C. ^y. — Psyllida^ found at Ames. <Proc. Iowa Acad. Sci., 

 II, pp. 152-171, pis. 3, 1894. 



A list of the described species, with a few additions. 



APHroiD^E. 



Walsh, B. D. — On the genera of Aphidse found in the United States. 

 <Proc. Ent. Soc. Phila., i. pp. 294-310, 1861-1863. 



Thomas. C. — Notes on the plant-lice found in the United States. 

 <Trans. 111. Hort. Soc, 1877, pp. 137-212. 



A review of the family, including the Psyllidae ; reproduces the descrip- 

 tions of earlier authors, and adds descriptions of new siiecies. 



A list of the species of the tribe Aphidini, family Aphidse, 



found in the United States, which have been heretofore named, 

 with descriptions of some new species. <Bul. 2, 111. State Lab. 

 Nat. Hist, 1878, pp. 3-16. 



