236 INSECTA SAUNPFRSTANA. 



band on each hind-thigh, and three brown bands on each hind-shank : wings 

 colourless ; wiug-ribs and veins tawny, the latter black towards the tips ; 

 poisers yellow. Length of the body 2\ lines ; of the wings 5^ lines. 



United Slates. 



Syrphus Cohbis, Mas. 



^neo-viridis, capite flavo, thoracis lateribus scutelloque fulvis, pectore 

 Jlavo vario, abdomine ferrugineo basi fulvo fasciis nigris apice piceo, 

 antennis pedibusque fulvis, femoribus tibiisque posticis fusco cinctis, 

 alis sublimpidis. 



Head bj'ight pale yellow ; hind part and underside black, tinged with 

 hoary, clothed with white hairs : eyes bright red ; facets on the crown 

 larger than those elsewhere : mouth ferruginous : feelers bright tawny ; 

 sixth joint black, tawny at the base : chest and breast brassy-green: chest 

 clothed with tawny hairs, adorned ivith four indistinct pale ferruginous 

 stripes tvhich unite in front of the scutcheon ; sides and scutcheon tawny : 

 breast tinged with hoary, adorned on each side loith a short yelloiv band and 

 toith two yelloiv spots : abdomen nearly elliptical, longer and a little broader 

 than the chest, ferruginous, tawny tmvards the base where it has tivo black 

 bands, pitchy tmvards the tip : legs tawny ; feet darker ; a pale broivn hand 

 near the tip of each hind-thigh, and another near the base of each hind- 

 shank : ivings nearly colourless ; wing-ribs tawny ; veins black, tawny at the 

 base ; poisers tawny. Length of the body 2h lines ; of the wings 5 

 lines. 



United States. 



Syrphus Gurges, Mas. 



Nigro-(sneus, capite flavo, thoracis lateribus scutelloque fulvis, pectore flavo 

 vario, abdominis fasciis fulvis nigro variis, antennis pedibusque ful- 

 vis, femoribus posticis apice nigra cinctis tibiis posticis nigris, alis 

 limpidis. 



Head bright pale yellow, black behind and beneath : eyes nearly black ; 

 facets rather large on the fore part of the crown : sucker pitchy with a 

 tawny tip : feelers pale bright tawny ; sixth joint black : chest and breast 

 brassy black ; sides of the chest and hind border of the scutcheon tawny : 



