CO 
98 DIPTERA. 
beneath. Thorax obscure cinereous, with four black stripes; scutellum testaceous. Abdomen ovate, 
cinereous, laterally testaceous ; first segment black ; second and third segments with a black dorsal stripe 
anda black hind margin; anus black ; macrochete on the hind margins of the second and third segments, 
and several on the anal segment, the latter also densely beset with black hairs; ventral surface testaceous, 
in the middle shining black. Middle tibie with some long bristles; hind tibis outwardly nearly fringe- 
like with bristles; foot-claws and pulvilli elongate, the pulvilli yellowish. Tegule whitish. Wings 
greyish-hyaline, on the base and costa with a yellowish tint; small cross-vein on the middle of the discal 
cell; apical cross-vein a little concave ; posterior cross-vein oblique and nearly straight. 
Hab. Mexico, Teapa in Tabasco (H. H. Smith). 
A single male specimen. 
14. Brachycoma nigripalpis, sp. n., ¢ ?. 
Cinereous or somewhat ochraceous ; frontal band, four thoracic stripes, reflecting spots (more or less in three 
series) on the abdomen, antenne, palpi, and legs black. 
Length 6-5-8°5 millim. 
Greyish-cinereous, the front always, and sometimes the cheeks and even the whole body, more or less ochra- 
ceous. Front narrowed behind, in the female not broader than in the male; frontal band narrow ; 
frontal bristles on each side in a double row; eyes descending to the vibrisse. Antenne a little shorter 
than the face; second joint bristly ; third joint sometimes rufous at the base, three times as long as the 
second; arista thickened to the proximal half. Thoracic dorsum with four rather broad black stripes, 
which are prolonged to near the posterior margin ; scutellum with a brown reflecting spot near the tip. 
Abdomen ovate ; first segment black; second and third segments with a black hind margin, black dorsal 
stripe, and two blackish-brown lateral reflecting spots; a row of macrochetz on the hind margin of the 
third segment, and a double row of shorter macrochet on the anal segment (in some specimens there are 
vestiges of a pair of macrochete on the hind margin of the second segment); anal segment densely haired 
beneath. Front tibiee outwardly with short bristles; middle tibiee with three or four longer bristles ; hind 
tibia outwardly fringed and towards the apex with bristles of unequal length. Tegule whitish. Wings 
greyish-hyaline, sometimes slightly infuscated along the costa; small cross-vein a little before the middle 
of the discal cell; curvation of the fourth vein forming nearly a blunt angle; apical cell rather widely 
opened ; apical cross-vein almost straight ; posterior cross-vein very slightly curved. 
Hab. Mexico, Dos Arroyos 1000 feet, Venta de Zopilote 2800 feet, both in Guerrero, 
Atoyac in Vera Cruz, Teapa in Tabasco (H. H. Smith). | 
Several specimens of each sex. 
In the less rectangular curvation of the fourth vein and the rather regular spots on 
the abdomen this species has some affinity with the genus Meigenia. 
15. Brachycoma barbatula, sp.n., ¢ ¢. 
Cinereous; frontal band, four thoracic stripes, reflecting spots on the abdomen, antenne, and legs black ; 
palpi rufous; bristles above the vibrissee mounting to nearly half the face. 
Length 8 millim. 
Front cinereous, in the male narrowed behind and there as broad as the eyes, in the female broader ; frontal band. 
as broad as the paler lateral portions; frontal bristles on each side in a curved row, descending to beneath 
the second antennal joint, and exterior to these in the female are several other bristles ; face and cheeks 
yellowish-white ; above the vibrissz a row of shorter bristles, reaching to nearly half the face. Antenne 
descending to near the vibrisse ; second joint bristly ; third joint four or five times as long as the second ; 
arista thickened to the proximal half. Proboscis black; palpi rufous, infuscated at the base, slightly 
enlarged towards the tip. Thorax cinereous, with four black stripes, which become diffuse behind the 
transverse suture; scutellum cinereous, blackish at the base, in some specimens slightly testaceous at the 
