J. R. MALLOCH 255 



It is paler in color, the abdomen in both sexes being largely yellow- 

 ish testaceous, in the male on basal half, while in quieta the general 

 color is black, with the apices or tergites yellowish. Apart from 

 any hypopygial distinctions which may exist, the principal 

 characters for the differentiation of the species are indicated 

 in the key. 



Stein's description of pidviUafa fits my interpretation of quieta 

 better in some respects than it does the former, but he specific- 

 ally mentions the presence of a median posterior bristle on fore 

 tibia in pulviUata, and this is present in even the male, whereas 

 in the other species it is absent. 



Originally described from Carolina. I have before me one 

 male, Plummer's Island, IMaryland, June 22, 1909, (W. L. 

 jVIcAtee); one female, same locality, June 14, 1908, (A. K. 

 Fisher) ; one female, same locality, July 24, (N. Banks) ; one 

 female, Delaw\are Water Gap, New Jersey, July 12, 1895, (C. W. 

 Johnson?). 



Phaonia rufibasis Malloch 



Phaonia rufibasis Malloch, Proc. Biol. Soc, Wash., xxxii, p. 207, 1919. 



This species is verj^ similar to errans Meigen in color, differing 

 in having the basal two antennal segments and base of third as 

 well as the palpi reddish j'ellow. The coxae are largely, and the 

 femora and tibia entirely reddish yellow. 



Structurally similar to errans but the parafaeials narrower, 

 third antennal segment over twice as long as second. Basal 

 abdominal sternite hairy. Hind femur with a series of antero- 

 ventral bristles and one or two rather long bristles at or near 

 middle on poster© ventral surface. 



Length, 8 to 9 mm. 



Originally descril)ed from Chester, Massachusetts, August 3, 

 1911. Type in collection of Boston Society of Natural History. 



I have seen one male from Plummer's Island, Maryland, 

 !May 27, 1915, (R. C. Shannon), which is in the National ^Museum 

 Collection. 



Phaonia perfida Stein 



Phaotiia perfida .Stein, Archiv fiir Naturges., 1918, abt., A, heft 9, p. 13, 1920. 

 I have not seen this species, which Stein described from one 

 specimen without data, sent to him by Dr. Hough. 



TRANS. AM. ENT. SOC, XLVIII. 



