,30 'Jaiiuar}', 



17 (18) Size smaller ; elytra greenish-grey, with or without brown or piceous 



markings ; convexity of the curve of the arms of the sedeagus above... 



9. Fieberi, n. B'p., frontalis, Fieb. 



18 (17) Size larger; entire upper-side pitch-black, with a bluish tinge ; the first 



transverse nerve, and those immediately adjoining it, frequently forming 

 a kind of pale H 'lear the base of each elytron ...10. cyance, Boh. 



Of these, metria, 7-notata, variata, and 6-notata, are our well-known species of 

 those names ; opacipennis, punctifrons, fasciifrons, and cyancB, are new to Britain, 

 and Fieberi is practically so, although it was described by Fieber from specimens 

 sent to him by Mr. Scott under the name of 6-notatus. In point of facies, frontaUx, 

 fasciifrons, 6-notafa, and Fieberi form a natural group, and to the same group cyance 

 and opacipennis evidently belong, the former illustrating an extreme development 

 of the dark markings ; and the latter, in the majority of specimens, their entire 

 absence. In the group just mentioned, the normal black markings of the head are 

 a pair of round or roundish basal spots, an interocular line more or less widely 

 interrupted in the middle, and a pair of large spots on the forehead, the latter clearly 

 representing the coalescence, vertically, of the widely interrupted interocellar and 

 infraocellar lines, as presented in C. fasciifrons, where, with the exception of some 

 highly coloured males, they retain their separate character. The remaining four 

 species are very distinct in appearance. As before remarked, C metria is somewhat 

 aberrant in the external male characters, but as it agrees with the other species in 

 contour, and the neuration both of elytra and wings, it seems undesirable to create 

 a new genus for its reception. This interesting species has been much misunderstood, 

 being placed by Fieber, Sahlberg, Scott, &c., in the genus Deltocephalus. C. fron- 

 talis, Scott, is a good species, allied in the form of the crown to C. punctifrons. 

 Fall. ; it may be easily distinguished from our other species with the crown-markings 

 of the 6-notata pattern by its superior size, and the entire absence of angulation in 

 the outline of the front margin of the crown ; so far as I know, it has not been 

 taken in Britain since the capture of the original specimens by the Rev. T. A. 

 Marshall in a swampy place near Lastingham in September ; the male is still unde- 

 scribed, but T have a strong opinion that a male Cicadula from Chamounix, sent to 

 me by Dr. Puton as representing what he considered to be C. frontalis, Fieb., 

 belongs here. 



The colour-characters are best seen in highly coloured males, and as the more 

 difEcult species {6-notata and Fieberi) are highly gregarious, there will generally be 

 no difficulty in securing some of these in each gathering and in deciding to which 

 type of coloration the majority of the specimens belong ; it is perfectly useless to 

 attempt to identify solitary females of the two species last named. 



I append descriptions of those species of which no English 

 description has hitherto appeared ; the measurements used are actual, 

 not estimated, quantities. 



Cicadula opacipennis, Leth. (?). 

 C. opacipennis, Leth., Ann. See. Ent. Belg., xix ; Bull., 83 ; in Fieber's 

 Cicad. d'Eur. (Cicadula), 58. 

 Crown, prDiiotuni, and t^cutelhuii, yellow, tlie former sometimes with two puncti- 



