220 Mr. Thomas Desvignes' Descriptions of 



Head— eyes and occiput and forehead black. ^ n I ennee beneath 

 pale yellow, obscurer towards the apex, black above. Thorax 

 with a broad line before, one at the base, joined to another below 

 the wings, yellow. Scutellum large, elevated, subcordate, also a 

 line below yellow. Wings hyaline ; stigma fuscous, base broadly 

 pale ; areolet petiolated, small, triangular, the external nervure 

 rather indistinct. Legs — hinder femora somewhat fulvous ; the 

 apex of posterior tibise and tarsi black. Abdomen — the first seg' 

 ment narrower than the thorax, its sides straight, the remainder 

 as broad, with their margins glaucous or pale white. 



Bassus planus. 



Pedibus rufis ; tibiis posticis albidis apice, et tarsis nigris. 

 ^ facie, antennis subtus flavis, coxis anticis pallidioribus ; 

 $ ore et puncto faciali sub-stramineis, areola obliqua 

 sessili. 



Statura omnino B. picti, Grav. 



Long. 3 lin. 



Head — mouth and face of the S yellow ; ? mouth and a facial 

 dot paler. Antennce longer than half the body, filiform or sub- 

 setaceous ; $ beneath yellow. Thorax with a narrow yellow 

 streak before the wings. Wings smoky hyaline ; stigma fuscous, 

 base and scales pale ; areolet oblique, 4-angular, sessile. Legs 

 red ; anterior coxse and trochanters paler, more so in the $ ; hinder 

 tibiae whitish, their apex black, also the hinder tarsi. Abdomen 

 of the $ not so broad as the thorax, the sides parallel; J sub- 

 fusiform; 1st and 2nd segments finely aciculated, the remainder 

 more glossy, but slightly canescent. 



B. compressiis, $ . (B. M. C. p. 91 — 19, ? .) 



Mas. — Facie toto et articulo primo antennarum subtus flavis, 

 reliquis ferrugineis ; picturis thoracis et pectoris fiavis, 

 coxis anterioribus flavis ; abdomine lineare ; segmentis 1° 

 et %° et basi 3» punctatis scabris, reliquis nitidioribus. 

 Head — face and the lower part of cheeks yellow. Antennce — 

 first joint beneath yellow, the remainder ferruginous. Thorax 

 gibbous, a broad hooked line before, a dot at the base and a line 

 below the wings yellow; also a sutural line encircling the breast, 

 behind the first pair of coxee, of the same colour. JVings as in ? . 

 Legs as in ? , but the anterior coxae yellow. Abdomen linear ; 

 1st, 2nd and base of 3rd segments scabrous, punctate, the re- 

 mainder glossy ; very near the base of 3rd segment is a short 

 depressed line. 



