British species of Psijllidcc. 529 



is divided by a channel, leaving a small notch in front ; 

 posterior margin angnlate. Ocelli three, placed one in 

 the frontal notch, and one adjoining each eye, almost on 

 the posterior margin. Face lobate. Antennce 10-jointed ; 

 two basal joints short, stont, somewhat obconic ; remainder 

 filiform ; 3rd longest. Ei/es large, placed on the sides of 

 the head ; viewed from above, the outer margin very 

 convex ; inner margin straifjht, almost parallel Avith the 

 central channel. 



Thorax : pronotian collar-shaped ; lateral margins con- 

 tracted posteriorly ; on each side two fovere ; mesonotum, 

 anterior portion shuttle-shaped ; posterior portion at its 

 greatest breadth about equal to the width of the head 

 without the eyes. Scutellurn minute, apex rounded. Elt/~ 

 tra almost uniform in Avidth from in a line with the base 

 of the cubitus ; corium, costal margin without a stigma; 

 cubitus petiolate. 



Species 1. ArytcBna ulicis. 



Fsi/lla Ulicis, Curt. B. E. 565, 22 a (1835); Fsi/lla 

 Spartii, Hartig, Germ. Zeits. iii. 375, 9 (1841) ; Leth. 

 Hem. Nord, ed. ii. 88, 3 (1874) ; Arytaina Spartii, 

 Forst. Verb. Ver. Rheinl. v. 69. 



Green, dusky yellow or red. Mesonotum posteriorly 

 W'ith five longitudinal, brown or black streaks. Elytra 

 transparent, with a black or brown longitudinal streak 

 between the radius and cubitus, and three others at the 

 margin alternating with the nerves. 



Head: croion, fovens and generally a small spot in fi'ont 

 of each dark brown or black. Ocelli bright red. Face 

 variable in colour ; lobes clothed with fine, pale hairs ; 

 apex of each lobe with a long, fine, pale hair. AnteuncB 

 dark brown or black, 2 — 5 yellow, apex of 3 — 5 narroAvly 

 brown. 



Thorax: pro- and meso-Jiotum green, dusky yellow or 

 red ; fovere on the former dark brown, and five longitudinal 

 streaks on the posterior portion of the latter dark brown 

 or black. Sciitellum generally yellow. Flytra transpa- 

 rent; corium, nerves frequently pale, except the radius 

 and the bifurcations of the cubitus ; between the radius 

 and the cubitus a broad brown or black streak extending 

 from the base of the former to the apex ; alternating with 

 the nerves round the apex, three small patches attached to 

 the marginal nerve by a fine line ; claval suture Avith a 



