McAtee — Genera of the Eupterygidae. 113 



in the month of .Inly (certainly it was no earlier) it is clear that Eupteryx 

 Curtis has at least 6 months' priority over Typhlocyba Germar. 



('■mfusion has arisen between the two genera, also hecause the original 

 description of neither was sufficient, and because the species originally 

 included in them, were, with a single exception, the same. This has led 

 to their being synonymized back and forth, without reference to priority 

 or other merits of the case. 



Woodworth in 1889* appears to be the first who thoroughly realized the 

 difficulty and saw the necessity of designating a type. He says: "In 

 proposing the name {Typhlocyba) Germar simply mentions the following 

 species as forming the genus: Cicada aurata, urticae, vittata, picta, 

 quercus Fab. etc. Now it is evident that one of these species must be 

 taken as the type of the genus and as all except quercus belong to Eup- 

 teryx in its most restricted sense this species is the type. ' ' 



Distantf (1908) and Oshanin+ (1912) concur in this designation. 



\Vestwood§ in 1840 selected C. [icada] ulmi Linnaeus as the typical 

 species of Typhlocyba, but the choice is invalid as ulmi is not one of the 

 originally included species. Similarly even if Fieber's use|| of T. lineatella 

 Fallen as an illustration of the genus could be construed as a type desig- 

 nation it would be invalid for the same reason. 



Van Duzee's placing? Eupteryx as a synonym of Typhlocyba is a repe- 

 tition of an old error; this course is prevented by priority and by the 

 fact that the two genera are distinct on the basis of validly selected types. 

 His choice of [Cicada] aurata Linnaeus as type is of course barred by 

 Wbodworth's previous valid designation of quercus Fabricius.** 



Synonyms: Anomia Fieber, 1866; Einpoa Fitch, 1851 ; Zyginella Low , 

 1855. Which see. 



1850. DIKRANEURA. Hardy, James. Descriptions of some new British 

 Homopterous Insects. Transactions of the Tyneside Naturalists' 

 Field Club. I, p. 423, 1850. 



Monobasic: D. variata new species, Hardy op. cit. pp. 423-4, genotype. 



Emendations: Dicranoneura, Douglas, J. W. Notes on British Homop- 

 tera, with descriptions of additional species (Part 2). The Entomologists' 

 Monthly Magazine, 12, July, 1S75, p. 27. 



* Woodworth, C. W. North American Typhlocybini. Psyche 5, May-July, 1889, 

 p. 211. 



i The Fauna of British India, Rhynchota Vol. IV, 1908, p. 409. 



tOshanin, B. Katalog der palaarktischen Hemipteren (Heteroptera, Homoptera- 

 Auchenorhyncha and Psylloideae) 1912, p. 113. 



$ Westwood, J. O. An introduction to the modern classification of Insects founded 

 on the natural habits and corresponding organisation of the different families. Vol. 

 II, 1840. Synopsis of the genera of British Insects, p. 117. 



II Verh. K. K. Zool.-Bot. Ges. Wien. 16, 1866, p. 509. 



IT Van Duzee, E. P. Check list of the Hemiptera (excluding the Aphididae, Aleuro- 

 didae and Coccidae) of America, North of Mexico. 1916, p. 77: Catalogue of the Hemip- 

 tera of America north of Mexico, excepting the Aphididae, Coccidae and Aleurodidae. 

 1917, p. 707. 



•• Cicada quercus Fabricius, J. C. Entomologia Systematica emendata et aucta 

 secundum Classes, Ordines, Genera, Species, adiectus Synonymis, Locis, Observationi- 

 bus, Descriptionibus, IV, 1794, p. 47. 



