75 
6. Proboscis at most one and one-half times as long as height of head, 
three postsntural and four sternopleural inacrochretre, second 
and third segments of abdomen shining except on base of 
each 7. 
Proboscis three times as long as height of head, four postsutural 
and four sternopleural macrocnaetae, second and third segments 
of abdomen each marked with two shining black, triangular 
spots; length, 5 mm. Maryland. (Trans. Amer. Ent. Soc, Vol. 
XIX, p. 129; June, 1892: Coronimyia.) geniculata Town. 
7. Third joint of antenna? strongly concave on the front edge; length, 
5 mm. White Mountains, Xew Hampshire: District of Colum- 
bia; Virginia, and Southern Illinois. (Trans. Amer. Ent. Soc, 
Vol. XIX, p. 128; May, 1892: Siphophyto. Siphophyto neomexi- 
canus Townsend, 1. c. Gymnopareia americana Br. and Berg. 
MSS., Brauer and Bergenstamm in lift.) floridensis Town. 
Third joint of antennae strongly convex on the front edge; length, 
4 mm. Southern California. (Canadian Entomologist, Vol. 
XXVII, p. 127 ; May, 1895 : Siphophyto.) setigera Coq. 
Genus SIPHONA Meig. 
Siphon a Meigen, in Illiger's Magazin fur Insektenkundc, Vol. II, p. 281; 1803. 
Bucentes Latreille, Genera Crust, et Iusectorum, Vol. IV, p. 339; 1809. 
This synonymy is given by St. Fargeau and Serville, 1 and repeated by 
most later authors. Our species have three postsutural and three 
sternopleural macrochaetse, 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; 
abdomen opaque gray pollinose, black, the sides of the first two 
or three segments sometimes partly or wholly yellow ; length, 3 
to G mm. Toronto, Canada; White Mountains and Franconia, 
X. II.; Beverly, Mass.; District of Columbia; North 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 geniculata Meig.; also three 
females from England, received from E. Brunetti, and by him 
labeled Siphona geniculata. (Memoires servir Ilistoire Insectes, 
Vol. VI, p. 20; 177<) : Musca. The following synonymy is by St. 
Fargeau and Serville, in Encycl. Methodique, Vol. X, p. 501; 1828: 
Stomoxys minuta Fabrieius, Systema Antliatorum, p. 282; 1805. 
The following is by Meigen, in Syst. Iiesch. Eur. Zweif. In., Vol. 
IV, p. 151, 1824, and repeated by most later authors: Bucentes 
cinereus Latreille, (Ten. Crus. Insect., Vol. IV, p. 339; 1800. The 
^ueyclopodie M6thodique ; Vol. X, p. 500; 1828. 
