SYNOPSIS OF NORTH AMERICAN SYRPHID.E. 11 



colored, often brownish near their extremity; face and front brown; 

 thorax reddish on the sides; scutellum mere or less reddish; tegulae 

 and halteres pale testaceous ; abdomen often somewhat reddish at the 

 sides ; legs fawn-colored, base of femora largely black, a ring in the 

 middle of the tibiae, and the base of the hind tarsi, of the same color ; 

 wings gray, distinctly clouded on the posterior part and at the tip, 

 veins largely bordered with brown. 9 . Like the male, face and front 

 reddish. — Translation. 



Microdou fulgens. 



Microdonfulgens Wiedemann, Auss. Zw. Ins., ii, 82, 1. 

 Aphritis fuh/ens Macquart, Dipt. Exot. ler Suppl., 122. 

 Microdon euglossoides Gray, in Giiffitli's Animal Kingdom, ii, tab. 125, fig. 2. 



(Walker, List, etc., iii, 5:38). 



Habitat. — Georgia (Wied.), Florida, Guiana (Macq.). 



Viridaureus, alis fuscanis. 15°"", 9 . — Georgia. 



Fiihler schwarz. Untergesicht stahlblau, dlinn gelblichweiss behaart. 

 Mittelleib griingolden, in gewisser Richtung erscheinen darauf fast kup- 

 ferrothe Striemen. VorMgeldreieck stahlblau. Stirn zwischen griin 

 und stahlblau. Flligel fast rein braun, doch an den diinnen Randern 

 nur brJiuulich; Schiippchen weiss, mit schwarz gewimpertem Eaude. 

 Beine griin oder blau. — Wiedemann. 



Antennae black. Face steel blue, thinly yellowish white pilose. 

 Thorax green-golden, in certain reflections there appear copper-red 

 stripes. Ante-alar callosity (Vorfliigeldreieck) steel blue. Front be- 

 tween green and steel blue. Wings nearly pure brown, on the thin 

 veins only brownish ; tegulae white, with a black ciliate border. Legs 

 green or blue. — Translation. 



Microdon aurulentus. 



Mitlio auruJentus Fabricius, Syst. Antl., 185, 8. 



Microdon aurulentus Wiedemann, Ause. Zw. Ins., ii, 86, 10. 



Aphritis aurulentus Macquart, Dipt. Exot., ii, 2, 12, 4; pi. ii, fig. 1. 



Hahitat. — Carolina (Fabr.). 



Viridi aeneus, auro tomentosus. Twice as large as M. globosus. An- 

 tennae black. The entire body bronze-green, clothed with thick golden 

 pile. Legs black. — Translation from Fabricius. 



9. Long. 8™™. Face et front a polls jaunes. Autennes noires; 

 premier article un pen plus long que dans les especes europ^enes et au 

 moins autant que les deux autres r^unis. Thorax a polls jaunes ; 6cus- 

 son et abdomen k polls d'un fauve dore plus ou moins absens; pieds 

 noirs; jambesaduvet fauve. Balanciers fauves. Ailes brunatres. De 

 la Caroline. Bosc's Museum. — Macquart. 



Face and front with yellow pile. Antennae black, first joint a little 

 longer than in the European species, and a little shorter than the two 

 others together. Thorax with yellow pile; scutellum and abdomen with 

 pile of a golden luteous color more or less wanting; legs black; tibiae 



