47 
10. Length, min. or less : last section of third vein over one-third as 
long as the preceding section 11. 
Length. 8 to 10 mm 12. 
11. Abdomen shining brassy black, the margins whitish pollinose, 
wings hyaline, the base and a large spot on middle extending 
from costa to fifth vein smoky. (See above under 1.) 
ceneoventris Will. 
Abdomen subopaque whitish pollinose, the first segment, a dorsal 
vitta on the others, and the hind margins of the second and 
third black; black, the palpi yellow; thorax, when viewed from 
behind, subopaque, traces of a yellowish pollinose spot in front 
of the scutellum; eyes separated slightly wider than width of 
lowest ocellus, wings smoky, the hind margin subhyaline; 
calypteres yellowish ; length. mm. Woodbury, N". J. A 
single male specimen, collected June 7, 1896, by 0. W. Johnson. 
Type Xo. 352G, U. S. National Museum subopaca n. sp. 
12. Last section of third vein less than one-sixth as long as the pre 
ceding section, small crossvein nearer to tip of auxiliary vein 
than to tip of first vein, eyes separated less than width. of low- 
est ocellus, wings from base almost to small crossvein dusky 
yellowish, the remainder brown, calypteres brown, the margin, 
the lower edge of the front one broadly, and of the hind one at 
its base white; otherwise as in the female (under 5 above). 
Lufkin, Tex., October 17, 1890. A single male specimen, col- 
lected by C. W. Johnson grandis n. sp. 
Last section of third vein over one-fourth as long as the preceding 
section, small crossvein not nearer to tip of auxiliary vein than 
to tip of first vein, eyes separated one and one-half times width 
of lowest ocellus, abdomen with a strong brassy or violaceous 
tinge, wings from base to beyond base of discal cell yellowish, 
the remainder brown, the hind margin subhyaline; otherwise 
as in the female (under o above). Beverly, Mass. (October 11, 
1870, Edw. Burgess); Oswego, N". Y. (October 4, 1895, C. W. 
Johnson), and Indiana. Three male specimens, .diversa n. sp. 
Genus TRICH0P0DA Latr. 
Trichopoda L;itreille, in Cuvier's Regne animal. Vol. V; 1829. 
Our species have one postsutural and two sternopleural macrochsetsB, 
apical cell short petiolate: 
1. Abdomen partly or wholly yellowish 2. 
Abdomen and legs wholly black, the former not pollinose; wings 
black, not marked with white or yellow, the hind margin sub- 
hyaline; lower calypteres brown, the bases white; thorax deep 
black, the sides, transverse suture, and two subdorsal vittae in 
front of it light gray pollinose; length, 10 to 14 mm. Florida; 
Waco, Tex., and Colorado. (Systema Autliatorum, p. 220; 
« 180o : Thereva.) lanipes Fabr. 
