British species of Psyllida. 567 



Species 22. Psijlla melnnoneura. 



Psijlla melanoneura, Forst. Verb. Ver. Rlieinl. v. 75, 

 17. 



Reddlsli-yellow. Mesonotum posteriorly with pale mark- 

 ings. Abdomen above witb brown bands, beneath pale. 

 Antenna: 3—6 joints at the apex and the remainder 

 almost entirely brown. Face: lobes long, strongly nar- 

 rowed to the "^ apex. Elytra clear, transparent; nerves 

 pale at the base, from the middle deep brown; inner 

 margin, almost as far as the nerve adjoining the apex of 

 the clavus, pale brownish (in one example the stigma is 

 similarly colom-ed). 



A sine-le $ received from Mr. Walker. 



Species 23. Psijlla cBruginosa. 

 Psylla ceruginosa, Forst. Verb. Ver. Rheinl. v. 97, 6. 



Green. Mesonotum posteriorly with reddish-yellow 

 markings. AntenncE and legs yellow, the former from the 

 3 — 8 joints brown at the apex; 9—10 broAvn, the latter 

 more or less green. Elytra clear, transparent; nerves 

 pale at the base, towards the apex reddish or almost 

 brownish. 



Through the colour of the nerves P. aruginosa may be 

 distinguished at first sight from all other green species. 



Note. — Nothing is said about the stigma. 



Eight specimens received from Mr. Haliday. 



Species 24. Psylla occulta. 

 Psylla occulta, Forst. Verb. Ver. Rheinl. v. 98, 7. 



Reddish-yellow. Mesosternum posteriorly Avith some- 

 what darker-coloured streaks. Abdomen above with 

 brownish bands; underneath green. Antenna and legs 

 yellow ; the former from the 3 — 8 joints brown at the apex, 

 9 — 10 brown. Face: lobes long ; base broad ; apex acute, 

 widely divergent. Elytra clear, transparent; nerves at 

 the base yellow, towards the apex reddish and somewhat 

 darker. 



Note. — Nothing is said about the stigma. 



Two $ s and three ? s received from ^Ir. Haliday. 



