British species of PsijlUdce. 557 



I liavc only seen a few spcclmeiis, althonp:li on tlic 

 Continent it is said to be common in damp places from 

 May to October. 



Species 6. Trioza hamatodes. 



Trioza hcematodes, Forst. Vevli. Ver. lllicinl. v. 85, 13; 

 Letli. Hem. Nord, ed. ii. 93, 5. 



Elongate, brown-red, mtli paler streaks upon the meso- 

 notum. Face: lobes brownish-yellow. Antemm black; 

 1st and 2nd joints brown, 3rd yellow. Ehjtra clear, 

 transparent ; nerves pale brown ; radius short, space 

 enclosed between it and the costal nerve lanceolate. _ 



Head: crown orange reddish. Face: lobes brownish- 

 yellow, as long as the crown down the centre; base 

 moderate ; inner margin diverging from about the middle 

 to the somewhat acute apex. Antemm black; 1st and 

 2nd joints brown, 3rd yellow, 4th not h, the length of the 



3rd. 



Thorax: jnonofum pale; mcsonotum brown-red, pos- 

 terior portion with four somewhat brownish-yellow longi- 

 tudinal streaks; scutelliform appendage yellow, Avith a 

 faint reddish hue. Elytra elongate, clear, transparent, 

 nerves pale brown; costal and dorsal margin almost 

 equally rounded towards the somewdiat acute apex ; radius 

 short, about equal in length to the costal margin of the 

 basal cell; enclosed space lanceolate. Legs shghtly dusky 

 yellow. Thiqhs with a dark streak along the inside near 

 to the upper margin. Tarsi: 1st joint dusky, 2iid and 



claws black. 



Abdomen above brown ; posterior margin of the segments 

 narroAvly paler; beneath yellowish, $ genital segments 

 and processes yellow, apex of the latter narrowly brown. 



Length IJ line. 



Somewhat resembling T. Urticm in some points, but 

 differing from that species in the shape of the elytra, the 

 short, almost straight radius and enclosed lanceolate space, 

 and as also frequently having a shght fuscous shade along 

 the dorsal margin before the apex of the clavus. 



The insects ticketed T.forcipata by Meyer-Diir, which 

 are in my possession, belong to the above species. 



Taken both by Dr. Power and Mr. Douglas : by the 

 latter at Addington, end of October, on fir, and by the 

 former in February at Esher. 



