p.sociD.E. — rsocus. 123 



Sp. 21. flavicans. Niger, collure, ahdomineque flavis. (Long. Corp. f lin. ; 

 Exp. Alar. 3 liu.) 



He. flavicans. Linne.— Fe. flavicans. Steph. Catal. 313. i\^o. 3506. 



Plead black; neck yellow; thorax blackish; abdomen ovate, yellow; legs 

 blackish ; wings hyaline, with obscure branching nerviires ; antennse black. 



Found near London ; also at Hertford and in Suffolk, in July. 



Sp. 22. obsoletus. Pullide rufo-ochraceus, capite postice, ahdomineque macula 

 dorsali, atris, alis obscure fuscescentihus, nervis tenuibus saturatiorihusque. 

 (Long. corp. | lin.; Exp. Alar. 2§ lin.) 



Ps. obsoletus. Steph. Catal. 313. No. 3507. 



Pale ochreous-red : mouth yellow ; head behind black ; thorax immaculate ; 

 abdomen somewhat yellowish-red, w^ith a large patch of black on the back ; 

 legs very pale ochre ; wings obscurely fuscescent, with very slender darker 

 nervures; stigma pale flavescent-brown; antennae pale testaceous, with 

 dusky hairs. 



Found in July, near London. ' 



Sp. 23. hyalinus. Fusco-piceus, pedibus pallidioribus, abdo?ninis basi ochraceo-> 

 Jlavd, alis hyalinis, limpidis, stigmate fusco. (Long. corp. 1 lin. ; Exp. Alar. 

 3 lin.) 



Ps. hyalinus. Steph. Catal. 313. No. 3508. 



Head pitchy-brown, clypeus and mouth paler; eyes black; thorax pitchy- 

 red, immaculate ; abdomen above pitchy-brown, with the base ochreous- 

 yellow, beneath pale pitchy-red ; legs rufo-piceous, with the tibiae palest ; 

 wings hyaline, limpid, nervures and stigma fuscous ; antennae short, pitchy- 

 brown, palest at the base. 



Taken in June, near London. 



Sp. 24. bipunctatus. Flavo nigroque varius, alis anticis maculis 2-hus nigri- 

 cantibus. (Long. corp. |— 1| lin.; Exp. Alar. 21 — 3| lin.) 



He. bipunctatus. Linne. — Ps. bipunctatus. Steph. Catal. 313. No. 3509. 



Varied with black and yellow, greenish during life; wings hyaline, with 

 fuscous nervures, anterior with the stigma blackish, and a spot of the same 

 towards the base of the inner margin. 



Found occasionally within the metropolitan district, and in Suffolk, 

 in the summer. 



Sp. 25. sexpunctatus. Fuscus : alis anticis maculis J'uscis punctisque 6 dis~ 

 tinctis. (Long. corp. | — 1 lin.; Exp. Alar. 2^ — 3 lin.) 



He. sexpunctatus.' Linni.. — Ps. sexpunctatus. Steph. Cutal. 313. No. 3510. 



Fuscous: wings hyaline, with a golden tint; anterior witli fut>cous clouds or 



