198 , 1'cbniarj-, 



NOTES ON BRITISH HOMOPTEBA, WITH DESCRIPTIONS OP 

 ADDITIONAL SPECIES. 



BY J. W. DOUGLAS. 



TTPHLOCYBID^. 



In Silbermann's " Eevue," 1833, Germar characterised a group of 

 species of Sotnopfera as a genus, under the name of Ti/pJiIoa/ba, and 

 in January of the same year, in the first volume of the " Entomological 

 Magazine," Curtis characterised the same group under the generic 

 name of Eupten/x. Germar's definition was very meagre, and 

 Curtis's was also insufficient, and I am not sure which had the claim 

 of priority, although it is most probable it was due to Eupteryx. But 

 in 1837, in his " British Entomology," Curtis accurately defined 

 Eupteryx, giving characters, illustrated by figures, derived in part 

 from the neuration of the elytra and wings, find cowfivmmg! Cicada 

 picfa, Fab., as the type,Jbut without pointing out that all the species 

 he associated did not conform thereto. Therefore, when the generic 

 sub-division of the group, according to more precise modern ideas, 

 became requisite, it was necessary to restrict Eupteryx to the species 

 which agreed with the characters given, and to relegate the others 

 meanwhile to Typlilocyla. Several authors, however, have not done 

 this; "Westwood, in his "Introduction" (1810), quotes TyphJocyha, 

 Germ., in its entirety and as equivalent to Eupteryx, Curt. ; Zetter- 

 stedt, in his " Insccta Lapponica " (1810), gives a new name — Cicadiila 

 — to the genus, including some species not belonging to the family, 

 although he quotes Typ)hlocyl>a as a synonym, but he divided it into 

 eight sections without sub-generic names. Now, it follows that if 

 Zetterstedt's name, Cicadula, be retained at all, it can only be for the 

 first section of his genus, comprising two species. Cicada 4i-notata, 

 Fab., and C. strigipes, Zett. ; but both of these are referred to the 

 genus Thamnotettix by Fieber, who, after passing over the first section, 

 has made Cicadula, Zett., the generic receptacle for certain species of 

 the second section only. 



In the Ycrhandl. k. k. zool.-botan. Gesells. Wicn, 1865, Fieber 

 distributed the Typhlocylidce among ten genera, then characterized, 

 viz. : Compsus, Erytliria, Notus, Chloria, Kyhos, Anomia, Zygina, Idia 

 Typlilocyha, and Eupteryx, all of them, except the last two, being new. 

 Eupteryx is here properly typified, according to Curtis's characters, by 

 Cicada v it lata, L., and C. urticce. Fab. ; and to Typlilocyha are referred 

 all the species left after his generic selection ; Cicada lineatella, Fall. 

 (= C. fjcometrica, Schrk.), being the tyj#. 



