EXORISTA. 67 
the others more distinctly, rufous; only on the hind margin of the third segment is a row of macrochete ; 
anal segment with many shorter bristles. Legs black; front tibiee outwardly with a row of short bristles ; 
middle tibie with some long bristles; hind tibie fringed on the outside; foot-claws and pulvilli elongate, 
the pulvilli greyish-yellow.. Tegule whitish. Wings greyish-hyaline, the base and costal cell of a dilute 
brownish colour; small cross-vein on the middle of the discal cell; third vein curved upwards before its — 
end; apical and posterior cross-veins slightly curved. 
Hab. Mexico, Dos Arroyos 1000 feet, Tierra Colorada 2000 feet, Xucumanatlan 
7000 feet, and Omilteme 8000 feet, all in Guerrero, Atoyac in Vera Cruz, Teapa in 
Tabasco (H. H. Smith), Orizaba (coll. Bellard?). 
Several male specimens. 
11. Exorista tricolor, sp.n., ¢ 2. (Tab. III. fig. 9.) 
Cinereous ; four thoracic stripes, antenne, and legs black; hind margins of the abdominal segments black, 
sometimes (in the male) testaceous ; anus and palpi rufous; no discal macrochetz ; hind tibie outwardly 
fringed. — : 
Length 10°5 millim. 
Head pale ochraccous, the front narrowed behind; frontal band black, in the female narrower than the lateral 
portions ; frontal bristles short, on both sides descending in a double row, or somewhat irregularly, as far 
as the end of the second antennal joint; the bristles on the vertex more robust ; vibrisse accompanied by 
some shorter bristles; beard and pilosity of the occiput pale yellow; behind the posterior orbits of the 
eyes a row of short black bristles. Eyes with a short but dense pile. Antenne shorter than the face ; 
second joint pilose on the front side; third joint three times as long as the second ; arista thickened on 
the proximal haif. Thorax light cinereous, with four broad black stripes which are united two and two 
behind the transverse suture, and between which appear longitudinal rows of bristles; scutellum piceous 
or somewhat testaceous, with grey hind margin. Abdomen broadly ovate; first segment black, at the sides 
slightly rufous; second and third segments in the male testaceous, though very obscurely so on the dorsal 
portion, in the female black, in both sexes with whitish front borders, which are interrupted by a black 
dorsal stripe and are more extended at the sides; anal segment rufous, with grey reflections on the front 
border ; macrochets only on the posterior margin of the third segment, rarely a pair on that of the 
second; anal segment with several shorter macrochetx, which are not very conspicuous owing to the 
black pile. Front tibize outwardly with short bristles ; middle tibiae: with two longer bristles; hind tibie 
outwardly fringed. Tegule bone-white. Wings greyish, with some yellow tint at the base and on the 
costa; small cross-vein oblique, on, or a little beyond, the middle of the discal cell; apical cross-vein 
nearly straight; posterior cross-vein curved, on more than two-thirds of the apical cell. 
Hab. Mexico, Acaguizotla in Guerrero 3500 feet, Cuernavaca in Morelos, Atoyac in 
Vera Cruz, Teapa in Tabasco (H. H. Smith); Costa Rica, Cache (Rogers). 
Nine male and three female specimens. 
12. Exorista latimana, sp.n., ¢ 9. (Tab. III. fig. 10, anterior tarsus of the 
female.) 
Cinereous ; four thoracic stripes, antenne, and legs black ; palpi rufous; abdomen black, with the front margin 
of the second and third segments whitish ; anus rufous; hind tarsi outwardly fringed ; terminal joint of 
the front tarsi enlarged in the female; no discal macrochete on the second and third segments. 
Length 6°5--10 millim. . . 
Closely allied to the preceding species (£. trecolor), and not easily to be distinguished from it. In the male the 
testaceous coloration on the abdomen is more confined to the sides of the intermediate segments; the 
k2 
