630 ]\Ii'. .foliii Scott's ]\Ionorir<ij)li af the 



fuscous-black or brown margin. Freqnently these cliarao- 

 ters arc more or less indistinct. />''y/-f generally yellowish. 

 Th'ujiis more or less dark brown. 



Abdomen black, posterior margin of the segments nar- 

 rowly yellowish or orange; genital processes yellow, apex 

 black. 



Length 1,', line. 



I have restored Cnrtis's name for this insect as it is 

 some years older than that of Hartig. 



A very common species on furze bushes from ]\Iay to 

 August. 



Genus PsYLLA. 



Head broader than long. Crown considerably deflected ; 

 "without the eyes broader than long; divided down the 

 centre by a channel, and with a fovea on each side; the 

 space between the fovea3 and the inner margin of the eyes 

 much elevated or callus-formed; posterior margin more or 

 less concave. Ocelli three, placed one in the fi'ontal 

 notch and one near each eye, adjoining the posterior 

 margin on the summit of the elevated portion. Face 

 lobate ; lobes variform. Antenna 10-jointed; two basal 

 joints short, stout, somewhat obconic; 3—10 filiform ; 3rd 

 longest, 9 — 10 together about c(pial to the 8th: 10th with 

 two projecting fine hairs of unc([ual length. Eijes large, 

 placed on the side of the head; viewed from above the 

 outer margin very convex, inner margin slightly convex 

 and lying at an angle to the central channel. 



Thorax: pronotinn narrow, collar-shaped, with two 

 fovefe near the lateral margins, which last are incrassated ; 

 posterior margin concave; mesonofum, anterior portion 

 more or less obtuse, shuttle-shaped; base generally denti- 

 form at its extremities; posterior portion across the middle 

 as broad as or broader than the head and eyes together. 

 Scutellum minute, apex rounded. Ehjtra generally trans- 

 ])arent, rounded at the apex; costal margin at the base 

 very convex, from thence straight or slightly convex, 

 Avith a stigma sometimes almost obsolete. Cubitus pe- 

 tiolate. 



Differs from the genus .-ifryto/m by having a smaller and 

 more deflected crown, the two basal ocelli placed on a 

 callus-formed elevation, the eyes lying at an angle to the 

 central channel, and more jiarticularly by its greater 

 breadth of mesonotum, in which respect it approaches the 

 oeuus Trioza. 



