Readio: ( )\"ir()siTORS ok C'icAniiLLiii.K. 265 



Enipoasca, and inan>' ollicrs. In tlii' ;t<linitt('(lly loose and complex 

 genus Eusceli.s the ovipositors show the wide range of forms that 

 would be cxpeeted, and the same condition might be found in other 

 genera of equal complexity. 



Penally, we find constant characters of specific value in the ovi- 

 positor. The ovipositors of seventeen individuals of Cicadella hi- 

 eroglyphica (Say), representing as wide a geographical range and 

 as many color A'arieties as are to be found in our duplicate collec- 

 tion, were examined and found to be constant in the characters 

 given, which are sufficient to separate it from the other species of the 

 genus examined. Several specimens each of Graphocephala coc- 

 cinea (Forster) and Oncometopia lateralis (Fabricius) were exam- 

 ined in the same way and their characters also found to be constant. 

 Hence it can safely be concluded that characters of specific value, 

 constant within the range of the species, are found in the ovipositors 

 of the Cicadellidae. It is also true that these characters are accessi- 

 ble to the general worker and should not be neglected by him in a 

 taxonomic study in this family. 



BIBLIOGRAPHY. 



1878 — Packard: Guide to the Study of Insects. 



189S-.Marlatt : Periodical Cicada. U. S. Dept. of Agr., Bull. No. 14. n. s. 



1909 — Packard; Textbook of Entomology. 



1910— Stough: Hackberry Psylla. Kansas U. Sci. Bull., vol. V, No. 9. p. 121. 



1917 — Van Duzee: Catalogue of Heniip. of N. A. 



1918 — Xewell: Comp. Morph. of the Genitalia of In.sects. Ann. Ent. Soc. Am., 



vol. XI, No. 2. 11. 109. 

 1919— Kornhauser: Sexual Characters of Thelia. Journ. of Morph., vol. 32. 



Xo. 3. p. 531. 

 1919 — Walker: Structure of Orthoj). Insects. Ann. Ent. Soc. Am., vol. XII. 



Xo. 4, p. 267. 

 1920— Lawson: Cicadellidae of Kansas. Kansas U. Sci. Bull., vol. XII. Xo. 1. 

 1921 — Hilsman: Ovipositor of the Cicada. Thesis MS., University of Kansas. 



