RHYNCHODEXIA. 227 
_ 18. Palpi black ; wings distinctly infuscated at the base and 
costa... ee ee ek ee we ee ee preusta, v. A. Walp. 
Palpi rufous; wings unicolorous. . . . ...... 219. 
19. Thoracic dorsum cinereous, with the black stripes conspicu- 
ous over its whole length; larger species (more than 8°5 
millim.) . . . 2 1... we ee ee es Omisga, v. A. Wulp. 
Thoracic dorsum blackish, the black stripes more obsolete ; 
smaller species (less than 85 millim.) . . . . . . . émétatrix, v. d. Wulp. 
1. Rhynchodexia rutilans, sp.n., ¢ ¢. 
Thorax grey, with black stripes; abdomen yellowish-rufous, with a black dorsal band and whitish reflecting 
spots ; antenne, palpi, and legs rufous, the tarsi black. 
Length 10-5 millim. 
‘Head yellowish-grey ; front of the male much narrowed behind, the eyes being nearly contiguous on the 
. vertex, the frontal band rufous, trigonal; in the female the front is broad, slightly narrowed towards 
the vertex, the frontal band dark rufous, as broad as the lateral portions ; cheeks with pale rufous 
reflections ; vibrissal swellings parallel ; oral margin elevated and prominent. Antenne rufous; second 
joint prominent, with a rather long bristle; third joint two and a half times as long as the second; 
arista brown, thickened at the base. Proboscis a little longer than the head, black, with the terminal 
lips rufous; palpi rufous, slender. Thoracic dorsum grey, with three black lines, close together, before 
the transverse suture, and two broader lateral black stripes, which are prolonged behind the suture; 
pleure cinereous; scutellum rufous, but covered by a grey tomentum. Abdomen yellowish-rufous, in 
the male conical and transparent, in the female ovate, nearly opaque ; each segment with a large black 
spot, forming together a dorsal band, and with whitish reflecting spots, which in the male are more con- 
fined to the sides, in the female more spread over the whole surface; second and following segments 
with discal and marginal macrochete. Legs, including the coxe, rufous, the tibiae somewhat more 
obscure, the tarsi black; middle and hind tibie with several long bristles; foot-claws and pulvilli elon- 
gate in the male, the pulvilli yellowish. Tegule yellow. Wings greyish ; smal] cross-vein on the 
middle of the discal cell ; curvature of the fourth vein at a little distance from the wing’s margin; apical 
cell concave ; posterior cross-vein curved. 
Hab. Mexico, Omilteme in Guerrero 8000 feet (H. H. Smith). 
Four male and six female specimens. 
* 
dae 
2. Rhynchodexia discolor, sp. n., 3 9. 
Thorax grey, with black stripes; abdomen rufous, with a black dorsal band and yellowish reflecting spots ; 
third antennal joint infuscated, the basal joints rufous; palpi rufous; legs brownish-rufous, the tarsi 
black. 
Length 8-11°5 millim. 
Allied to R. rutilans, but of a darker coloration. The antenne shorter, their third joint in most of the 
specimens black or brownish-black, one and a half times as long as the second; the frontal band usually 
black in the male; the palpi of the female slightly thickened towards the tip; the vibrissal swellings 
convergent, the oral margin less prominent; the ground-colour of the thoracic dorsum more obscure and 
the black stripes therefore less distinct ; the scutellum brownish-rufous, with scarcely any grey tomentum ; 
the abdomen darker rufous and less transparent, in the male more densely beset. with macrochete ; the 
legs browner, the coxe black with grey tomentum, the femora in some specimens nearly black and only 
rufous towards the tip, the pulvilli grey; the wings somewhat brownish, the curvature of the fourth 
vein at a greater distance from the wing’s margin. 
Hab. Mexico, Ciudad in Durango 8100 feet (Forrer), La Venta 300 feet, Amula 
:’ og.” 
g 
