RHYNCHODEXIA. 231 
Xucumanatlan 7000 feet, Omilteme 8000 feet, Sierra de las Aguas Escondidas 9500 
feet, all in Guerrero, Teapa in Tabasco (H. H. Smith), Atoyac in Vera Cruz (Schu- 
mann). 
A large series of specimens, mostly males. 
9. Rhynchodexia rufianalis, sp.n., ¢ @. 
Cinereous ; thoracic dorsum with black stripes; abdomen with black reflecting spots; anus, basal joints of 
the antennee, palpi, and, in the female, the femora and tibie, rufous ; the legs black in the male. 
Length 7:5-10 millim. 
Head grey ; front of the male much narrowed behind, that of the female broader than the eyes; frontal band 
brown, with grey reflections, and with longitudinal grooves; cheeks and oral margin with rufous reflec- 
tions ; vibrissal swellings parallel. Antenne with the first two joints and the base of the third rufous, 
the latter for the rest black; second joint prominent; third joint twice as long as the second; arista 
black, thickened on its proximal half. Proboscis a little longer than the head, shining black, with the 
terminal lips usually rufous; palpi rufous, in the female slightly thickened towards the tip. Thorax, 
scutellum, and abdomen cinereous; thoracic dorsum with irregular black stripes; scutellum with black 
reflections. Abdomen conical (3) or ovate (9), with black reflecting spots, especially on the hind 
margins of the first three segments ; anus rufous; second and following segments with discal and marginal 
macrochete. Legs of the male black, the hind tibie scarcely with a rufous tip, those of the female, 
including the coxee or at least their tips, rufous, the tibiae more obscure, the tarsi black; front femora on 
the upper- and undersides, the middle and hind femora on the underside, and all the tibie outwardly 
with rather long bristles ; foot-claws and pulvilli elongate in the male, the pulvilli blackish. Tegule 
yellowish-white. Wings greyish; small cross-vein on or a little before the middle of the discal cell ; 
apical cross-vein concave ; posterior cross-vein curved. 
Hab. Mexico, Chilpancingo 4600 feet, Amula 6000 feet, both in Guerrero (H. H. 
Smith), Santiago de Iscuintla in Jalisco (H. H. Smith), Northern Yucatan (Gaumer). 
10. Rhynchodexia varipes, sp. n., ¢ @. 
Obscure cinereous ; thoracic dorsum with black stripes; abdomen with black reflecting spots; basal joints of 
the antenn, palpi, and legs rufous, in the male the femora and tibie partly, in both sexes the coxe and 
tarsi, black. 
Length 7-9°5 millim. 
Head grey, with blackish reflections; front in the male much narrowed behind, in the female broader than 
the eyes; frontal band scarcely differing in coloration from the lateral portions, with longitudinal grooves ; 
cheeks with brownish-rufous reflections ; vibrissal swellings slightly convergent. Antenne more elongate 
than in the preceding species ; the two basal joints and the base of the third rufous; second joint pro- 
minent, with some bristly hairs ; third joint two and a half times as long as the second; arista browns 
thickened at the base. Proboscis as long as the head (¢') or a little longer ( 2 ), shining black, with the 
terminal lips rufous; palpi rufous, slender, with rather long bristly hairs. Thorax dark grey; thoracic 
dorsum with four black stripes—the two median linear and only distinct before the transverse suture, the 
outer stripes broader and interrupted at the suture ; sometimes between the two median lines a less 
distinct brown line; scutellum blackish-grey. Abdomen conical (¢) or ovate (2), grey, with black 
reflecting spots, which in the female are so much extended that there remain only narrow front margins 
to the segments of the grey ground-colour; anus without any rufous coloration ; in the male many discal 
and marginal macrochete; in the female the second segment with some marginal, the third and anal 
segments with discal and marginal macrochete. Legs slender, rufous; the coxe black, with grey 
tomentum ; the tarsi black ; in the male the front femora are black, except on the underside and at the 
tip, and the middle and hind femora and tibie have a blackish base and tip; in the female all the femora 
and tibiee are rufous, or at least the blackish parts, which in the male are very conspicuous, are less 
extended and more obsolete; in both sexes the femora and tibise are beset with several rather long 
