SYNOPSIS OF NORTH AMERICAN SYRPHID.E. 5 



bare. Thorax red, with three broad, indistinct, blackish stripes. Scu- 

 telhim large, plane, trapezoidal in shape, the three sides nearlj' equal } 

 wholly without spines or tubercles ; pile short, reddish, not longer than 

 on the dorsiira of the thorax. Abdomen very short and broad, globose, 

 brownish-red, the pile very short and whitish. Legs red, the femora 

 more or less blackish ; hind metatarsi longer than the three following 

 joints together, very much dilated in the male. Wings brown along 

 , the front part and along the veins of the posterior part ; veins at the 

 outer part of the first posterior cell and discal cell nearly rectangular, 

 not rounded on the posterior angles. 

 Numerous specimens. 



Microdon pulcher, n. sp. 



Habitat. — Saint Domingo !. 



9 . Length, 12™™. Eyes bare. Face nearly parallel in profile with 

 the border of the eyes, shining black with a purple reflection, clothed 

 with not very abundant white pile. Antennae black, the first joint not 

 quite so long as the two others together, second joint short, not a fourth 

 as long as the third ; arista shorter than the joint. Front deep shining 

 purplish black, with short black pile. Thorax deep shining black, with 

 a purple or violet reflection ; pile short, black. ScutelluQi transverse, 

 not half as long as broad, spines small and inconspicuous, remote 

 from each other ; pile longer than on the dorsum of the thorax, nearly 

 white. The color of scutellum and the abdomen bright purple ; third 

 segment of the latter on the sides rather narrowly, fourth segment 

 broadly, fifth segment wholly, orange yellow, and clothed with the 

 same colored pile ; elsewhere the abdomen is clothed only with short 

 black pile. Legs black, the last joint of all the tarsi yellowish red ; all 

 the tarsi flattened transversely, the posterior metatarsi only a little 

 thicker. Wings dark brown, the interior of outer cells subhyaline ; the 

 last section ot the veins at outer j)art of the first posterior and discal 

 cells angulated and with stumps of veins. 



Two specimens, Saint Domingo (G-. F. Frazar). 

 Microdon baliopterus. (Plate I, fig. 4.) 



Microdot haliopterua Loew, Centur., x, 56. 



Hahitat. — Texas (Lw.) !. 



5,9. Belongs among the species with slender body and short 

 antennae ; fuscous bronze, moderately shining ; front, thorax, and scu- 

 tellum cupreous shining, abdomen greenish bronze in color, toward the 

 sides becoming coppery ; antennae and legs testaceous, third joint of 

 the former, and the basal half of the femora nearly wholly black fus- 

 cous ; wings hyaline, veins usually broadly clouded with fuscous black. 

 Length of body, 8 to O"'™; of wings, 6 to T""™. 



Related to 711. coarctatus, and Icetvs; fuscous bronze, moderately shin- 

 ing. Front resplendent coppery, clothed with light yellow pile ; face 

 and occiput white pubescent. Eyes sub-nude. Antennae short, saturate 



