238 ' [March, 



A single (^) example out of the 'Collection Done,' labelled 

 " JVieomida foveicoUis, Biiquet." 



At once to be distinguisbed from A. Friji, Pasc, by tbe more 



elongate and parallel form, the entirely reddish ferruginous colour, 



the differently formed horns at the fore-margin of the prothorax, &c. 



15, Nortliampton Square, Leicester : 

 January, 1872. 



ON CERTAIN BRITISH SEMIPTEEASOMOFTERA. 

 BY JOHN SCOTT, 

 (continued from Yol. vii, p. 196). 

 For the first time in their lives, European Homopterists are in 

 possession of a complete list of the species. The late Dr. Fieber's 

 " Katalog der europaischen Cicadinen "* shews that about 850 species 

 is their sum total ; but I fear we shall not be able to produce British 

 representatives for a fourth of that number. Although the list occupies 

 only some 16 pages, yet the labour required in coustructing it must 

 have been very great ; for, except amongst some of the more common 

 species, the descript.'ons by older authors of a very large number are 

 so vague and unsatisfactory, that it was absolutely necessary that 

 originals types should be obtained for comparison and identification. 

 Now that we have a definite starting point, I pui'pose, from time to 

 time, to give a revision of various genera, so as to enable those who 

 are at work upon them to have an idea of what species we possess, 

 and to describe such as may be new to Britain, so as to lead others 

 to trace their identity, Fieber's list is cheap, and will serve well 

 for labelling. 



{_Itevision of the Family DELPHACiDiE, and descriptions of several new species 

 of the genus Delphax of Authors.'] 



Species 8a. — Libtjenia iCMULATOE, n. sp. 

 "Undeveloped form, ^ . 



Keels of the head and face white ; pronotum greyish-white. 

 Scutellum pale brownish-yellow. 



Head longer tlian broad, pale brownish-yellow ; crown — keels white, not prominent, 

 channels black as far as the apex of the long, narrow triangle formed by the 

 middle keels. Face yellowish, keels white, margins of the keels black. Antenna 

 yellowish. Fyes fuscous-grey. 



Thorax : 2^>'onotum greyish-white, keels distinct ; beyond the side keels, and under- 

 neath the eyes, somewhat pale brownish-yellow. Scutellum pale brownish-yellow, 

 margins and keels greyish-white. Elytra pale fuscous, scarcely half the length 



* To be obtained through Mr. Janson, 38, Museum Street, W.C. — J. M. 



