80 
1824: Tachina. Pachyophthalmns aurifrons Townsend, Trans. 
Amer. Ent. Soc, Vol. XVIII, p. 354; November, 1891: from a 
cotype specimen. Pachyophthalmus sp., and Sphixapata sp., 
Brauer and Bergenstamm inlitt.) signatus Meig. 
Fourth segment of abdomen largely or wholly yellow, insect else- 
where black; Length, 5 to \) mm. Tifton, (la. ; Lake Worth, Fla.; 
Waco, Tex.; Colorado, and Santa Cruz Mountains and Los 
Angeles County. Call (Entomological News, Vol. Ill, p; SO; 
April, 1892. Sarcomacronychia unica Townsend, Trans. Amer. 
Ent. Soc., Vol. XIX, p. 101 ; May, 1892. Sarcomacronychia sar- 
cophagoides Townsend, Canadian Entomologist, Vol. XXIV, 
p. 16o; July, 1892. Sarcomacronychia trypoxylonis Townsend, 
Bulletin Ohio Agr. Exper. Station, Vol. I, No. 3, p. 165; April, 
1893.) Jloridcnsis Town. 
Genus SENOTAINIA Macq. 
Senotainia Macquart, Dipt&ree ESzotiques, Supplement I. p. nil; 1846. 
Arrenopus Brauer and Bergenstamm, Zweif. Kais. Mub. Wien, Vol. V, |». 360; 1891. 
Our species have three postsutural and two sternoplnral macrocha> 
ta\ two pairs of orbital bristles in both sexes; thorax, scutelluin, and 
. black : 
1. Third joint of antennae black 2. 
Third joint of antenna' yellow, last three segments of abdomen 
gray pollinose on the bases, that on the second and third pro- 
longed to the hind end of the segments in the middle of the 
dorsum, where it incloses a black triangle; sides of abdomen 
sometimes partly yellow: length, t to .7 mm. Toronto, Canada; 
New Hampshire; Springfield, Mass.; Maryland; Tift on, Ga.; 
Georgiana, Fla.; Lexington, Ky. ; northern Illinois; LasCruces, 
N. Mex., and southern California. (Dipteres Exotiques, Supp. 
1, ]>. 107; 1846. Miltogramma erythrocera Thomson, Kongliga 
Sven. Fregatten Bugenies Uesa, Diptera, p. 523; 1868. Milto- 
gramma fulvicornis van der Wulp, Biol. Cent. -Amer., Diptera, 
Vol. [I, p. 89; March, 1890. Miltogramma flavicornis Townsend, 
Trans. Amer. Ent. Soc., Vol. XVIII, p. 355; November, 1891. 
Miltogramma similis Townsend, loc. cit., p. 357. Miltogramma 
kansensis Townsend, Canadian Entomologist, Vol. XXIV, p. 68; 
March, 1892. Miltogramma decisa Townsend, Entomological 
News, Vol. Ill, p. 81 : April, 1892.) rubriventris Macq. 
2. Abdomen wholly black 3. 
Abdomen yellow, base of the first segment, apex of the fourth, and 
the genitalia, black, bases of the last three segments white 
pollinose, abdomen elsewhere shining, second segment destitute 
of a marginal pair of macrochaetae ; sides of front and the face 
silvery white pollinose. antemiaj black ; thorax gray pollinose, 
