424 | DIPTERA. 
hyaline dots of different sizes, and some others closely connected form a large clear space between the 
fourth and sixth veins, filling the middle of the discal cell ; in the first posterior cell is a blackish spot, 
darker than the surrounding coloration. . 
Hab. Mexico, Cuernavaca, Chilpancingo (H. H. Smith). 
Five males. 
2. Euaresta timida. . E. crenulata, 5 e W. 
Trypeta timida, Low, Dipt. Amer. sept., Cent. ii. no. 76’; Monogr. Dipt. N. Amer. in. p. 311, 
t. 10. fig. 25°. 
Hab. Mexico !2, Orizaba (H. H. Smith & F. D. Godman), San Lorenzo, near Cordova 
(M. Trujillo), Medellin and Atoyac in Vera Cruz, Teapa in Tabasco (H. H. Smith) ; 
Costa Rica, Caché (Rogers). 
A long series of specimens of both sexes. The coloration of the wings agrees exactly 
with Low’s description, except for a very slight difference : 
in all the examples before me the first hyaline incision at the 
end of the costa begins a little before the tip of the second 
vein, whilst in Low’s figure it begins just at this point. The 
identification, however, seems to be certain. 
Low has described the male only. In the female the 
abdomen is more uniformly blackish ; the ovipositor shining black, flattened, as long as 
the last two segments together. 
E. timida, Low. 
8. Kuaresta rufula, sp. n., ¢ 2. 
Rufous, with yellow hairs; wings fuscous, the base, two incisions beyond the stigma, a series of incisions 
round the tip and along the hind margin, and some dots in the centre, hyaline. 
Length 5 millim. 
Head rufous ; front posteriorly broader than the eyes, slightly attenuated towards the base of the antenne ; 
frontal bristles brown; behind the eyes a row of yellow bristles; face short, excavated; cheeks narrow. 
Antenne, proboscis, and palpi rufous; the antennze reaching to the middle of the face. Thorax and 
scutellum rufous; thoracic dorsum with yellowish hairs; scutellum with four bristles. Abdomen 
somewhat flattened, rufous, with yellow hairs and some indication of brown dorsal spots; ovipositor of 
the female shining brown, conical, as long as the last three segments together. Legs and halteres pale 
rufous; underside of the fore femora with yellow bristles. Wings proportionately large, their coloration 
very much as in the preceding species (E. timida); the base, including the second and third basal cells, 
hyaline, with some traces of reticulation; the rest of their surface fuscous, with hyaline marginal 
incisions and some hyaline dots; stigma black, with a clear line at the end of the auxiliary vein and one 
or two clear dots; immediately beyond the stigma two hyaline incisions, the first of which is prolonged 
by a small dot beyond the second vein ; round the tip of the wings six rather large incisions, and some 
smaller unes along the hind margin ; on each side of the small cross-vein a rather large hyaline dot, and 
some others in the discal cell and the third posterior cell. 
Hab. Mexico, Atoyac in Vera Cruz (H. H. Smith). 
One male and one female. 
E. rufula, v. d. W. 
