212 



PSrCHE. 



I May— July 1889 



two forms of venation on the two sides 

 of the same insect. All the species 

 mentioned or described by Fitch belong 

 to Typhlocyba except yai^ae of Harris. 

 The latter was onl}' incidentally men- 

 tioned by him as belonging to Eryihro- 

 neura so I think it is the proper course 

 to consider both his genera as synonyms 

 of lyphlocyba. Fitch was soon aware 

 that his genera covered the same ground 

 as the European genus Typhlocyba^ and 

 five years afterward in his annual report 

 for 1S56, published the same year, he 

 attempts to restrict the genus Typhlocy- 

 .ba to a group of insects unknown to 

 'Germar. In this he has been followed 

 by ao one but Walsh and It is an un- 

 warranted restriction. Walsh in this 

 same year published in the Prairie 

 furmer and also separately ( reprinted 

 in Proc. Boston, soc. nat. hist. v. 9, p. 

 314-318) an article in which he makes 

 two more genei'a Chloroneura and 

 Empoasca parallel with those of Fitch 

 and separated by the same character. 

 They form a single genus distinct from 

 any yet described which we will call 

 by the shorter and euphonious name 

 Empoasca. 



In his "Neue gattungen" Fieber 

 (Veih. zool.-bot gesell. in Wien 16, p. 

 506-509) made ten genera of the 

 Eiuopean species indicating types as 

 follows : 



Compsus elegantiila H-S. 

 discicollis H-S. 

 albostriellis H-S. 



Erythria areolata Fall. 



JSfotus Jlavipennis Zett. 

 furcipattis Flor. 



orichalceus Dahlb. 

 Chloria viridtda Fall. 



pura Stal. 

 Kybos smaragdulus Fall. 



coinmisiirallis Stal. 

 Anomia guerczis L. 

 Zyginia nivea Muls. 

 Id la sctitellaris H-S. 

 pullula Boh. 

 Typhlocyba lineatella Fall. 

 Eupteryx v it lata L. 



urtlcae Fabr. 

 He made the same error that Walsh 

 and Fitch had in dividing the group on 

 insufficient characters so that some of his 

 genera had to be abandoned and two of 

 the names ( Co7npsus and Chloria^ 

 were preoccupied. These latter were 

 changed by him in his "Katalog der 

 Europaischer Cicadinen" [1S72] to 

 Alebra and Chlorlta. In this same 

 work he unites Ei-ythria with Notiis 

 and Idia with Zyginia, The year 

 previous Sahlburg [Cicadaria 1871] had 

 united Zyginia,, Anotnia and Idia with 

 Typhlocyba and also Chloria with 

 Kybos. The last two he called erro- 

 neously Cicadula. In 1875 Douglass 

 (Ent. mo. mag. v. 12) substituted the 

 older name Dicraneura for Notus and 

 now after putting in our North Ameri- 

 can genera the synonymy stands as 

 follows : 



Alebra Fieber 



Compsus Fieber 

 Empoasca Walsh 



Chloro7ieiira Walsh 

 Kybos Fieber 



Chlorita Fieber 

 Chloria Fieber 



