CICADELLOIDEA EURYMELIDAE 3 



varieties are catalogued, however, under the first designation, regard- 

 less of its form. Some of these varieties may prove to be valid species 

 with further study and then may be given latinized designations. 



Primary homonyms of species have been replaced by nomina nova; 

 secondar}^ homonyms have been restored to their original names if the 

 homonymy has been relieved by moving one or the other, or both 

 species, to other genera. 



All specific endings have been modified to agree with the suggestions 

 made by Blackwelder 1940, Journal of the Washington Academy of 

 Sciences 31: 135-140. There are certain disadvantages inherent in 

 this method, but it seems to the writer that these limitations are out- 

 weighed by the advantages. We are confronted by so many coined 

 words that can have no gender it seems better to use this system and 

 disregard apparent violations of Latin and Greek grammar. Where 

 the gender of generic names can be determined, the appropriate ad- 

 justments are made in the specific names. 



In a detailed catalogue such as this it is practically impossible to 

 eliminate all errors. We will appreciate it very much if our atten- 

 tion is directed to all such mistakes. It is especially easy to overlook 

 lists published in the proceedings of local natural history societies, 

 references to species of economic importance published in scientific 

 agricultural journals, references to vectors of plant diseases published 

 in phyto-pathological journals, and references of a similar nature. It 

 will be very much appreciated if authors will send us reprints of all 

 articles dealing with the Homoptera. Also, it would seem that no 

 changes in the nomenclature adopted in this catalogue should be made 

 in the future without a full explanation. 



AU literature available to the writer before December 31, 1955, has 

 been included in this catalogue. 



The present catalogue of the Family Eurymelidae is the twelfth 

 part of the CicadeUoidea. This was virtually complete at the time 

 of the death of Dr. Z. P. Metcalf on January 5, 1956. It was com- 

 pleted with the aid of Miss Virginia Wade, research analyst. North 

 Carolina State of the University of North Carolina at Raleigh, who 

 worked with Dr. Metcalf for 7 years, and the technical advice of Dr. 

 David A. Young, North Carolina State, and Dr. W. H. Anderson, 

 Insect Identification and Parasite Introduction Research Branch, 

 Entomology Research Division, Agricultural Research Service, U.S. 

 Department of Agriculture, Beltsville, Md. Miss Emily Bennett, 

 formerly Librarian of the Division of Insects, U.S. National Museum,, 

 was extremely helpful in locating certain references needed for the 

 catalogue. The higher categories utilized in this classification are 

 those decided upon by Dr. Metcalf dm*ing his work on the catalogue. 



