136 Mr. T. D. A. Cockerell on 
effect, just as in H. carinata, Head rounded, not particu- 
larly swollen behind the eyes ; cheeks beneath and anterior 
margin of clypeus each with a large and dense brush of 
white hairs ; anterior margins of eyes, up to a distance above 
the level of the antenne equal to the length of the scape, 
bordered by a conspicuous white hair-band; vertex and the 
rest of the face almost free from hairs, but some scattered 
pubescence above the level of the antenne ; antennz long, 
flagellum brownish beneath, its first two joints about equal, 
the third somewhat longer; clypeus much more finely punc- 
tured than the face above. In another specimen the clypeus 
is covered with white hair and the face is more hairy. Thorax 
very little hairy, the white pubescence most noticeable about 
tubercles and along the hind margin of scutellum, but dense 
on the ventral surface between the legs. ‘Tegule shining 
piceous. Wings rather short, rather dusky, especially along 
the costa beyond the stigma, beautifully iridescent ; nervures 
and stigma piceous, stigma moderately well developed, first 
recurrent nervure reaching second submarginal cell only just 
beyond the origin of the first transverse cubital. Abdomen 
with distinct but narrow white hair-bands, its dorsal surface 
with very large punctures. It does not end in four projec- 
tions, but is similar in general structure to that of H/. carinata. 
Hab. Las Cruces, N. M., on Aster spinosus, August (Ckll. 
4626), and on Solidago canadensis, Sept. 3 (CkIl. 4748). 
b. Larger species, the red practically confined to the four 
hindmost legs. 
Feriades bigelovie, sp. n. 
&. Length about 5} millim. 
More bulky than the last, the head quite large, though not 
notably extended behind the eyes. Black, with the middle 
and hind femora and the hind tibie and tarsi bright ferru- 
ginous. Pubescence white, tolerably abundant, quite covering 
the face up to a little below the middle ocellus, dense on the 
cheeks beneath and along margins of mesothorax, scutellum, 
metathorax, and pleura; the disk of the meso- and meta- 
thorax nude, not so the pleura; abdominal segments with 
very distinct apical hair-bands, snow-white, the first much 
broadened at the side; legs more or less white-hairy. Punce- 
tuation of vertex, thoracic dorsum, and abdomen strong and 
tolerably close, but not nearly so large or coarse as in the 
carinata group. Basal enclosure of metathorax smooth, 
shining, impunctate. ‘Tegulee testaceous, pubescent. Wings 
perfectly hyaline, nervures and stigma piceous. Stigma 
