British species of Psyllidcc. 563 



from that species by the spot in the internal basal cell, the 

 irregular transverse band connecting the fuscous-brown 

 margins of the branches of the cubitus, and the spot at the 

 base of the cell of the latter. 



As regards the colouring of the pro- and meso-notum, 

 the description may be found hereafter to be defective, 

 because the specimens from which the foregoing has been 

 drawn up are very old, and have been submerged along 

 ■with the other valuables of the Rev. T. A. ISIarshall. 

 There are four or five specimens in his collection taken 

 at Cheltenham. 



Species 4. Aphalara picta. 



Chermes picta, Zett. I. L. 308, 3 ; Aphalara Jlnvi- 

 pennis, Forst. Verh. Ver. Rheinl. v. 89, 1 ; Leth. 

 Hem. Nord, ed. ii. 95, 4 ; Aphalara Sonchi, Forst. 

 Verh. Ver. Eheinl. v. 96, 2 ; Aphalara picta, Flor, 

 Rhyn. LivL ii. 539, 6. 



Greenish-yellow or dusky yellow, with darker streaks 

 on the mesonotum. AntenncB yellowish; 1st and 2nd 

 joints underneath browm ; 9 — 10 black. Elytra clear, or 

 sometimes faintly yellowish and sprinkled wdth pale broAvn 

 towards the apex. 



Head greenish-yell oav, or dusky yellow. Antennce 

 yellowish; 1st and 2nd joints underneath more or less 

 brown ; 4 — 8 very narrowly brown at the ajDCx ; 9 — 10 black. 



Thorax : pronotum pale greenish-yellow; mesonotum 

 pale yellowish-green or dusky yellowish ; anterior portion 

 with two small reddish-brown triangular patches in front ; 

 posterior portion Avith fovu' broad, pale broAvn or yellowish- 

 broAvn longitudinal streaks. Elytra clear, or sometimes 

 faintly yelloAvish, transparent; nerves yelloAv, their margins 

 and the spaces enclosed by them more or less thickly 

 sprinkled Avith pale broAvn, the particles more or less 

 confluent ; sometimes the ner\^es toAvards, and at the apex, 

 broAvn. Leys greenish or dusky yelloAvish. Tarsi : 2nd 

 joint sometimes broAvnish. Claics broAvn. 



Abdomen above fuscous-black ; posterior margin of 

 the segments narroAvly, and sides broadly, green ; under- 

 neath green. 



Length If — 2 lines. The largest of all the knoAvn 

 European species. 



It appears to be a very common species on the 

 Continent, occiu'ring in damp mcadoAvs from June to the 



