28 DIPTERA. 
base, black at the tip, in the male surrounded by black hairs; front tarsi of the female a little dilated. 
Tegule testaceous, almost of the same colour as the abdomen. Wings brownish, more obscure at the base 
and along the costa; small cross-vein somewhat infuscated, placed on the middle of the discal cell ; apical 
cross-vein incurved on its base ; posterior cross-vein a little curved and inserted on two thirds of the apical cell. 
Hab. Mexico, Ciudad in Durango 8100 feet (Forrer); Costa Rica, Rio Sucio, Volcan 
de Irazu 6000 to 7000 feet (Rogers). . 
A male and several female specimens. At first sight this species might easily be 
confounded with the above-described Saundersia bipartita ; but, apart from the generic 
difference (the perfectly developed palpi), J. dichroma has the third joint of the antenne 
shorter and broader; the yellow colour of the abdomen less clear; the scutellum more 
yellowish ; the black spot at the base of the abdomen less extended; and the second 
and third segments have a double row of spines. 
2. Jurinia badiiventris, sp.n..g. (Tab. II. fig. 6.) 
Black, including the antenne, palpi, and legs; head whitish; frontal bristles descending in a single row 
beneath the root of the antenne; scutellum piceous; abdomen brownish-red ; wings brown. 
Length 16:5 millim. 
Face and cheeks white, the face porrected at the oral margin, the latter showing a brownish-yellow reflection ; 
cheeks with a weak pile; front blackish, narrowed behind, with a black median band; frontal bristles on 
both sides descending in a single row beneath the root of the antennz; vibrissa accompanied above as 
well as beneath by some shorter bristles; beard white. Antenne and palpi black, of the same shape as 
in J. dichroma. Thorax shining black, with a slight bluish tinge, a dark cinereous tomentum, and 
some faint indication of stripes; pilosity black; the macrochetz abundant and strong, especially on the 
sides; scutellum piceous, densely beset with spines. Abdomen convex, shining, brownish-red (in some 
specimens there are traces of a black dorsal band); spines of the second and third segments placed exclu- 
sively at the hind margin and of unequal size, those of the fourth segment abundant on the entire surface ; 
venter spinose in its middle portion. Legs black, with moderately long and stout bristles; foot-claws 
rufous at the base; pulvilli pale yellow. Tegule and wings rather dark brown; small cross-vein placed 
if anything a little before the middle of the discal cell; curvature of the fourth vein with an acute angle ; 
apical cross-vein incurved at its base; posterior cross-vein faintly curved, nearly on three fourths of the 
apical cell. 
Hab. Costa Rica, Volcan de Irazu 6000 to 7000 feet (Rogers). 
Four male specimens. 
3. Jurinia adusta, sp.n.,¢ 2. (Tab. II. fig. 7.) 
Blackish; head whitish ; antenne brown or reddish; frontal bristles descending irregularly beneath the root of 
the antenne; palpi fulvous; scutellum and abdomen brownish-red; legs piceous; wings brownish-grey. 
Length 11-15 millim. 
Face and cheeks white; front cinereous, narrowed behind; frontal bristles descending in a double row and 
somewhat irregularly beneath the base of the antenne; cheeks with some dark pile; vibrisse accom- 
panied by several shorter bristles; beard and pilosity of the occiput pale yellow; above behind the eyes a 
row of short black bristles. Antenne piceous, with more or less extended dark red portions, sometimes 
nearly wholly reddish; second joint on the upper part bristly; third joint about as long as the second, 
ovate, usually blackish at the front side; arista gradually tapering near the apex. Proboscis shining 
black; palpi fulvous, thickened and with small black bristles towards the end. Thorax black, with 
cinereous tomentum, the front side with four longitudinal black stripes ; macrochete abundant. Scutellum 
dark brownish-red, densely beset with spines and at the hind margin with long macrochete. Abdomen 
convex, shining, brownish-red, with black pile and robust spines at the hind margin of the second and 
