314 INSECTA SAUNDEESIANA. 



third : chest with a cinereoiis covering and with four black stripes, the outer 

 pair interrupted, broader than the inner pair; abdomen obconical, a little 

 longer than the chest, black toivards the tip : legs tawny, stout ; feet black : 

 wings almost colourless ; prEebrachial vein foiining a very obtuse angle at 

 its flexure, almost straight from thence to its tip ; lower cross-vein with the 

 two curves which are slight: alula? white with pale yellow borders : hal- 

 teres tawny. licngth of the body 4 lines ; of the wings 9 lines. 



United States. 



Dexia angusta. 



Testacea ; caput et pectus alba ; scutellum apiceflavum ; abdomen Jlavutn, 

 maculis tribus trigonis piceis semivittatum, apieefulvum; antenyicB 

 nigrte, basi fulvce ; pedes fulvi, tarsis nigris ; aim anguslce, sub- 

 limpidce. 



Testaceous, slender, almost linear ; head white, clothed behind and be- 

 neath with white hairs ; frontalia ferruginous, very slender, widening 

 slightly towards the feelers : mouth tawny ; palpi yellow ; feelers black ; 

 first and second joints tawny ; third tawny towards the base ; sixth feathered 

 with very short hairs : breast white : scutcheon yellow toivards the tip : ab- 

 domen yellow, taivny at the tip, ivith a pitchy triangular spot on (he hind 

 border of each segment from the first to the third, that of the first segment 

 very small : legs long, tawny ; feet black : uings narroio, almost colourless ; 

 veins black, tawny towards the base ; prsebrachial vein forming a very ob- 

 tuse angle at its flexure, nearly straight from thence to its lip ; lower cross- 

 vein with two curves, the lower inward, deeper than the other which is 

 outward : alulae very pale yellow : halteres tawny. Length of the body 

 Si lines; of the wings 8 lines. 



Brazil. 



Dexia australis. 



Nigra ; caput argenteum ; thorax cano trivittattis, scutello apice ferru- 

 gineo ; abdomen albo-micans, fulvo bivittatum ; tibia picecB ; ales 

 cinerecB. 



Black : head silvery white, clothed behind and beneath with white 

 hairs ; frontalia black, widening from the eyelets to the feelers; afermgi- 



