BRACHYCOMA. . 95 
Hab. Mexico, Venta de Zopilote 2800 feet, Acaguizotla 3500 feet, Chilpancingo 
4600 feet, all in Guerrero (H. H. Smith). | 
Two male and two female specimens. 
7. Brachycoma pygmea, sp. n., °. 
Cinereous; four thoracic stripes, reflecting spots on the abdomen, antenne, and legs black; anal segment 
ochraceous ; palpi rufous. 
Length 5:5 millim. . 
Head whitish, a little broader than the thorax; front much broader than the eyes; frontal band blackish- 
brown ; frontal bristles somewhat irregularly descending as far as the end of the second antennal joint 5 
cheeks immediately under the frontal bristles with a subtrigonal brown spot; exterior to the facial ridges 
are some bristly hairs. Antenne shorter than the face; second joint short, bristly ; third joint four 
times as long as the second. Proboscis black; palpi pale rufous. Thorax and scutellum cinereous ; 
thoracic dorsum with four black stripes. Abdomen ovate; first segment black; second and third seg- 
ments cinereous, with irregular black reflections; anal segment ochraceous ; macrochete on the hind 
margins of the-second and following segments. Front tibie with short bristles; middle tibis with some 
longer bristles; hind tibie outwardly with several bristles of unequal length. Tegule white. Wings 
greyish, along the costa with a brownish-yellow tint ; small cross-vein a little beyond the middle of the 
discal cell ; apical cross-vein slightly curved ; posterior cross-vein nearly straight. 
Hab. Mexico, Amula in Guerrero 6000 feet (H. H. Smith). 
A single female specimen. 
8. Brachycoma biseriata, sp. n., 3 2. 
Cinereous ; face whitish ; scutellum and abdomen testaceous; basal joints of the antenne reddish ; third 
antennal joint, some thoracic stripes, a dorsal stripe on the abdomen, hind margins of the second and 
third segments, and legs black ; anus and palpi rufous; frontal bristles on each side in a double row. 
Length 10-11 millim. 
Face and cheeks white; front cinereous, on the vertex at least as broad as the eyes. Antenne slender ; the 
basal joints dark rufous; the third joint black, twice as long as the second; arista.thickened to the 
proximal two-thirds. Palpi pale rufous, curved upwards. Abdomen testaceous ; first segment black; the 
following segments with whitish-grey front borders, their hind margins and a dorsal stripe black; anus 
rufous; macrochete short and weak, sometimes scarcely perceptible among the black pilosity. In both 
sexes the frontal bristles form a double row on each side of the frontal band ; exterior to these bristles is 
a short but dense pilosity. In the female sometimes a fifth stripe appears between the two median 
stripes on the thorax. The small cross-vein is situated on or a little before the middle of the discal cell ; 
apical cross-vein oblique ; posterior cross-vein distinctly curved. 
Hab. Mexico, Chilpancingo in Guerrero 4600 feet, Atoyac in Vera Cruz, Teapa in 
Tabasco (H. H. Smith). 
Two male and three female specimens. 
9. Brachycoma pallidula, sp. n., ¢. 
Yellowish-rufous; thorax cinereous, with four dark lines; abdomen transparent, with a dorsal band and the 
hind border of the third segment black; anal segment dark rufous ; legs partly rufous. 
Length 7°5 millim. 
Head not broader than the thorax, yellowish-rufous, the median part of the face pale yellow; occiput grey ; 
front not prominent; frontal band not differing in coloration from the lateral portions; frontal bristles 
