538 JNIr. .lolin Scott's Moiwgmph of the 



posterior with <a narroAv pale yellowisli-wliitc line down 

 each side of the centre, and two others of the same colour 

 exterior. Elytra clear, transparent ; nerves pale yellow, 

 clear, or dark brown, accordino; as the insect is coloured. 

 Costal stig-nia somewhat broad and lono-; dorsal marg-inal 

 nerve next the clavus with a sliort dark brown or black 

 streak. Z^r/^ ])ale yellow. 2'arsl: 2nd joint and c/«m-.s- 

 generally dark brown. 



Abdomen green or bro^m ; in the latter case the margins 

 of the segments are pale. 



Length 1^ — Inline. 



Allied to P. crat(P(jicola, which insect differs fi-om the 

 above in the want of the streak on the margin at the ajiex 

 of the clavns, the different form of the iiice-lobes and the 

 colouration of the antenna. 



Xot uncommon on sallows fi-om June to September. 

 I have also beaten it from larch {Larix communis) in 

 August. 



Species 8. Psylla j)ineti. 



Psylla pineti, Flor, Rhyu. Livl. ii. 47 1 , 10 ; Leth. Hem. 

 Kord, ed. ii. 91, 15; Psylla ornata, Meyer, Mitth. 

 schw. ent. Ges. iii. 393. 



Red, or brown-red, with lighter or darker sti-eaks on the 

 mesonotum. Face : lobes as long as the crown down the 

 centi'e, base somewhat narrow, exterior margin sloping 

 gently from the base to the middle, afterwards to the apex 

 almost straight; inner margin straight; divergence mo- 

 derate. Antennce short, yellowish or reddish-yellow; 1st 

 joint blackish, 4 — 5 at the apex black, 6 — 10 black. Ely- 

 tra with an extremely faint testaceous tinge, ti-ans]iarent ; 

 nerves fine, light or dark brown ; costal stigma wide and 

 long. 



Head reddish or brown-red. Crovn : posterior margin 

 concave. Face : lobes red or red-bi'own, as long as the 

 crown down the centre, base somewhat narrow, exterior 

 margin sloping gently from the base to the middle, froni 

 thence to the apex almost straight ; inner margin straight, 

 apical half almost cylindrical. Antenna; yelloAvish or red- 

 dish-yellow, short, not reaching to the base of the stigma ; 

 1st joint blackish, 4 — 5 black at the apex, 6 — 10 black; 

 4th about three-fourths the length of the 3rd. 



Thorax : pronotnm red ; mesonotum red or brown- 

 red; posterior portion with four pale or red longitudinal 

 streaks placed one on each side of the centre, and another, 



