384 S. W. WilUston — North American Conopidcu. 



tibia? with two narrow rings, black. Wings brownish in front, sub- 

 hyaline behind, the anterior cross-vein with a blackish, the posterior 

 cross-vein with a brown cloud ; first posterior cell open. 



Hab. California ! 



One specimen (H. K. Morrison). This species is related to 

 pictipennis^hvA, may be distinguished by its shorter proboscis, 

 and the greater jtilosity of the front and abdomen ; it is also 

 smaller. 



Myopa vesiculosa Say. 



5 9 . Length, 6""'\ Face and cheeks yellowish white. Antennae 

 red, the second joint brownish. Front blackish, lighter on the sides 

 below. First joint of proboscis not as long as front femora, and 

 scarcely twice as long as the palpi. Thorax black, the humeri, the 

 sides of the dorsum, the scutellum, and pleurae, deep red ; pile of 

 dorsum short, inconspicuous, chiefly black. Abdomen rather broadly 

 oval, black, shining, the lateral margins and posterior segments 

 red ; pile short, recumbent, white ; the posterior angles of the second 

 and third segments, the sides of the fourth segment, and all the 

 remaining segments yellowish gray pollinose. Base and tip of 

 femora, base of tibiae, and the tarsi yellow, elsewhere brownish red, 

 the femora more or less blackish. Wings strongly infuscated, 

 except at the base, where they are light yellow; first posterior cell 

 closed. 



Hab. Atlantic States ! 



Two specimens, White Mountains (Dr. Uiuimock) and Georgia 

 (Morrison). A specimen from Virginia agrees, except that the short 

 pile of the abdomen is black. It is possible that the next species 

 may not be distinct. 



Myopa plebeia, u. sp. 



^ $ . Length, 8-9'""'. Head light yellow ; front and iipi)er part 

 of occiput ferruginous red ; antennae red ; proboscis black, the basal 

 joint shorter than the front femora, scarcely twice the length of the 

 palpi; the short sparse pile of the vertex black. Thorax dark led, 

 dorsum with three obscure black stripes, the lateral ones abbreviated 

 and interrupted, the middle one abbreviated behind ; pile s ort, 

 black. Abdomen oval, black, with short black pile ; lateral mar- 

 gins and posterior segments red ; posterior angles of the second and 

 third segments, the fourth segment on (he sides, extending across 

 narrowly on the IiiM<l margin, and all ot the suceee«ling segments 



