75 



6. Proboscis at most one and one-balf times as long as height of head, 



three postsntnral and four sternopleural macrochietic, second 

 and third segments of abdomen shining except on base of 



each 7. 



Proboscis tliree times as long as height of head, four postsntnral 

 and four sternoplenral niacroclueta>, second and third segments 

 of abdomen each marked with two shining black, triangular 

 spots; length, 5 mm. Maryland. (Trans. Amer. Ent. Soc, Vol. 

 XIX, 1). 129; June, 1892: Coronimyia.) </enicuIata Town. 



7. Third Joint of antenn.ii strongly concave on the front edge; length, ^ ^ 



5 mm. White Mountains, Xew ITampshire; District of Colum-'^ '^ ^W^-^^ 

 bia; Virginia, and Southern Illinois. (Trans. Amer. Ent. Soc, ^ 



Vol. XIX, p. 128; May, 1892: Siphophyto. Siphophyto neomexi- 

 canus Townsend, 1. c. Gymnoparcia americana Br. and Berg. 



MSS., Brauer and Bergenstamm in Hit.) JioHdensis Towu.^yb, 



Third joint of antennio strongly convex on the front edge; length, 

 4 mm. Southern California. (Canadian Entomologist, Vol. 

 XXVII, p. 127 ; May, 1895 : Sipliopliyto.) setigera Coq. 



Genus SIPHONA Meig. 



Siphona Meigen, in Illiger's Magaziu fiir Insektenkimde, Vol. II, p. 281 ; 1803. 

 Ilncentes Latreillo, Genera Crust, et lusectorum, Vol. IV, p. 339; 1809. 



This synonymy is given by St. Fargeau and Serville,^ and repeated by 

 most later authors. Our species have three postsntnral and three 

 sternopleural macrochaitoe, third vein bristly at least halfway to the 

 small crossvein, two pairs of orbital bristles in both sexes, palpi and 

 greater part of femora and tibiae yellow : 

 1. Terminal section of proboscis laterally compressed and widened, 



at most three-fourths as long as height of head. 2. 



Terminal section bristle-like, at least as long as height of head; 

 al)domen opaque gray pollinose, black, the sides of the first two 

 or three segments sometimes partly or wholly yellow; length, .3 

 to mm. Toronto, Canada; White Mountains and Franconia, 

 X. H.; Beverly, Mass. ; District of Columbia; Xorth Carolina; 

 northern Illinois; Colorado; England, and Austria. Two males 

 and one female from Austria received from Brauer and Bergen- 

 stamm, and by them labeled Siphona (feniculata aieig.; also three 

 females from England, received from E. Brunetti, and by him 

 labeled Siphona <ienicidata. (Menioires servir Histoire Insectes, 

 Vol. VI, p. 20; 1770 : Musca. The following synonymy is by St. 

 Fargeau and Serville, in Encycl. Methodique, Vol. X, p. 501 ; 1828 : 

 Stomoxys minnia Fabricins, Systema Antliatorum, p. 282; 1805, 

 The following is by Meigen, in Syst. I>esch. I^ur. Zweif. In., Vol. 

 IV, p. 154, 1824, and repeated by most later authors: liuccntes 

 cinereus Latreille, Gen. Crus. Insect., Vol. IV, p. 339; 1809. The 



'Encyclopddle Metlioduiue, Vol. X, p. 500; 1828. 



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