135 



the female one and oue-half, times as long as the second; penul- 

 timate joint of arista in the male four times, in the female 

 slightly over twice, as long" as broad; length, 10 to 12 mm. 

 Franconia, N^. H.; Delaware County, Pa.; Maryland; uorthern 

 Illinois, and Tifton, Ga. (In Scndder's Butterflies of New Eng- 

 land, Vol. Ill, p. 1917; 1S80: Acrof/lossa. Pseudogonia riijicauda 

 Townsend, Can. Entomologist, Vol. XXIV, p. 60; March, 1892. 

 Pseiidogonia ohsolcta^ Townsend, loc. cit.). . . .hesperidarum Will. 

 2. Third joint of anteun.e in the male from two to two and three- 

 fourths, in the female from one to one and one-half, times as long 

 as the second; penultimate joint of arista in the male from one 

 and one-half to four, in the female one and one-fonrth, times as 

 long as broad; length, 11 to 12 mm. North Carolina; Georgia; 

 Fernandina, Fla., and Austria. A female from Austria received 

 from Brauer and Bergenstamm and by them labeled Cnephalia 

 hinetosa- B. B. (Diptera Suecia^, Muscidse, p. 11; 1820: Tach- 

 ina. The following synonymy is by Desvoidy in Annales Soc. 

 Entomol. France, p. 317; 1851: Spallanzania galUca Desvoidy, 

 Essai snr les Myodaires, p. 79; 1830. The following is by 

 Kowarz in Wiener Eut. Zeitung, Vol. VII, p. 6; January 31, 

 1888 : Gonia midifacies Macquart, Dii^teres Nord France, Vol. V, 

 p. 179; 1833. Isomera parisiaca Desvoidy, Annales Soc. Ento- 

 mol. France, p. 315; 1851. Gonia coy nata Eondani, Dipt. Italicie 

 Prod., Vol. Ill, X). 38; 1859. Spallanzania alpestris Rondani, 

 loc. cit., Vol. IV, p. 155; 1861. The following is by the writer: 

 Cnephalia pansa Snow, Kansas University Quarterly, Vol. Ill, 



p. 182 ; January, 1895.) hebcs Fall. 



Third joint of antenna- in the male eight times as longasthe secimd, 

 penultimate joint of his arista four times as long as bioad; 

 black, the palpi and scutellum yellow; front of male twice as 

 wide as either eye, the sides and face whitish polliuose and 

 wholly covered with short macrocha^tiTe except a narrow space 

 outside of the fa(;ial ridges, frontal bristles short, descending 

 to the arista; cheeks slightly over oue-half as broad as the eye 

 height, facial ridges bristly on the lower four-fifths, antennae 

 seven-eighths as long as the face, arista thickened almosttothe 

 tip; thorax gray polliuose, marked with four black vittie, sen tel 

 lum bearing three long marginal pairs and a short apical pair of 

 macrocha^ta?, abdomen gray polliuose and with reflectingblackish 

 spots, second and third segments bearing marginal macrocha-ta^, 

 wanting on the first; front pulvilli two-thirds as long as the last 

 tarsal joint; wings hyaline, third vein bearing five bristles at 



' The identity of ritficatida and obsoleta has already been given by F. H. Snow in 

 the Kansas University Quarterly, Vol. Ill, p. 183, from au examination of the tyjie 

 specimens. 



2In the Zweif. Kais. Mns. Wien, YI, p. 222, Brauer and Bergenstamm state that 

 Fallen's type specimen of hcbes is identical with their bifielosa. 



