PSOCID.E. — PSCCUS. 115 



b. First nervure of anterior wings trifurcate. 



Sp. 30. immaculatus. Pallide ochraceus, oculis atris, antennis longioribus fus- 

 cescentibus, pedibus pallidis, alis limpidis, nervis tenuibus stigmateque fusces- 

 centibus. (Long-, corp. 1 — 1^ lin.; Exp. Alar. 4 — 5 lin.) 



Ps. immaculatus. Kirb^ MSS—Steph. Calal. 313. No. 3514. 



Very pale ochreousj immaculate; eyes deep black; legs pale, with the tarsi 

 fuscescent; antennse rather long and brownish, the basal joint pale; wings 

 longish and narrow, limpid, nervures very slender, and pale fuscescent ; 

 stigma also fuscescent, but very pale. 



Found in June near London ; also at Ripley and in Suffolk. 



Sp. 31. rufescens. Rufescente-flavus, capite thoraceque nigra maculatis, abdominis 

 dorso subpiceo, pedibus ochraceo-pallidis, antennis longioribus, alis limpidis, 

 stigmate concolore, (Long. corp. 1| lin. ; Exp. Alar. 44 lin.) 



Ps. rufescens. Steph. Caial. 313. No. 3515. 



Reddish-yellow : crown with a dusky spot, and thorax with three blackish 

 ones ; abdomen above somewhat pitchy ; legs pale ochreous : antennae 

 rather long and fuscous, with the basal joint pale; wings long and limpid, 

 stigma concolorous ; nervures very slender and brownish. 



Taken at Hertford in June. 



Sp. 32. flavescens. Ochraceo-Jlavus, immaculatus, oculis atris, antennis longiom 

 ribusfuscis, pedibus pallide Jlavescentibus, alis limpidis, stigmate suhfuscescente, 

 venis tenuissim,is fuscescentihus. (Long. corp. l^ lin.; Exp. Alar. 4g- lin.) 



Ps. flavescens. Steph. JVomen. 2d edit. col. 116. 



Pale ochreous-yellow, immaculate ; eyes black ; legs pale yellowish ; antennae 

 rather long and fuscous, the basal joints palish ; wings limpid, with the 

 stigma slightly fuscescent, nervures very slender, and pale fuscescent. 



Found at Ripley and Hertford, and other places within the me- 

 tropolitan district, during the summer. 



Sp. 33. quadripunctatus. Niger, antennis abdomine pedibusque pallidis, alis 

 hyalinis, anticis basi punctis 4 atris, apicejusco radiatis. (Long, corp. ^ — 1 

 lin. ; Exp. Alar. 2^ — 3g lin.) 



Ps. 4-punctatus. Fabricius.-^Steph. Catal. 313. No. 3516. 



Head and thorax black, immaculate ; abdomen, legs, and antennae pale ; 

 wings hyaline, anterior with four distinct large black spots at the base* 

 three of which are on the inner margin, and one towards the disc, the apex 

 with radiating fuscous streaks, posterior immaculate. 



In immature specimens the head and thorax are pale pitchy-red. 



Very abundant on trunks of trees, throughout the metropolitan 

 district, during the summer ; found also in Suffolk and near Dover. 



