590 LIST OF DIPTERA. 



black ; poisers ferruginous. Length of the body 4 J lines ; of the 

 wings 8 lines. 



a. Georgia. From Mr. Abbot's collection. 



Syrphus Peas, n. s., mas. Purpureo-ceneus, capitis macula nigro-cya- 

 nea, fronte flavo, abdomine nigro fasciis purpureis, antennis ni- 

 gris, pedibus piceis, femoribus basi flavis, alis fuscis maculis 

 duabus posticis limpidis. 



Body purplish bronze : head a little broader than the chest, 

 yellow in front, adorned with a large bluish black spot above the 

 base of the feelers : eyes red ; facets very small : mouth and feelers 

 black : abdomen slender, nearly cylindrical, slightly increasing in 

 breadth towards the tip, more than twice the length of the chest, 

 and not half its breadth ; each segment adorned with a purple 

 band : legs pitchy ; four front thighs yellow for half the length from 

 the base ; hind thighs tawny at the base : wings dark brown, with 

 a large colourless angle near the tip of the hind border, which is 

 also colourless at the base, and there are some almost colourless 

 spots between it and the disk ; wing-ribs and veins black ; poisers 

 tawny, with piceous knobs. Length of the body 5 lines ; of the 

 wings 8 lines. 



a. ? From Mr. Childr«n's collection. 



Syrphus Radaca, n. s., mas. JEneus, abdomine fasciis rufis canisque, 

 antennis nigris, pedibus fulvis, posticis piceis, alis limpidis di- 

 midio cos tali fuscis fuscoque fasciatis. 



Body dark bronze : head a little broader than the chest, white, 

 and clothed with short white hairs behind and beneath, tawny in 

 front : eyes red ; facets very small : mouth and feelers black : 

 breast covered with white bloom : abdomen slender, slightly in- 

 creasing in breadth from the base to the tip, much narrower than 

 the chest, and more than twice its length ; a broad, dark red band 

 on each segment, whose hind border is covered with hoary bloom : 

 legs dark tawny ; hind legs pitchy : wings dark brown along the 

 fore borders for the whole length and for near half the breadth ; 

 the dark part is sometimes varied with colourless stripes, its outline 

 is irregular, and it joins the hind border by a broad, irregular band 

 a little beyond two-thirds of the length of the wing ; wing-ribs and 

 veins black ; poisers tawny. Length of the body 4^ lines ; of the 

 wings 8 lines. 



a. Florida. Presented by E. Doubleday, Esq. 



