URELLIA. 427 
Hab. Mexico, Northern Sonora (Morrison), Orizaba 
(H. H. Smith & F. D. Godman).—Cosa *. 
Three specimens (one male and two females). 
U. polyclona, Low. 
3. Urellia eugenia, sp. n.,¢ ¢. 
Rufous ; the black spot of the wings extended inwards over the small cross-vein and covering the stigma, 
Length 2°5 millim. 
This species differs from all others of the genus by its rufous coloration and the extension of the black spots 
on the wings. Head, antenna, proboscis, and palpi rufous; front flattened, broader than the eyes, 
anteriorly slightly narrowed ; frontal bristles brown; behind the eyes a row of yellow bristles ; face 
short ; cheeks rather narrow; oral margin slightly prominent. Antenne short. Thorax and abdomen 
greyish, but appearing rufous on account of a dense ochraceous dust, and with short yellow hairs ; 
scutellum with four bristles; ovipositor of the female shining black, truncated, as long as the three 
preceding segments together. Legs and halteres rufous. Wings long and narrow, whitish-hyaline ; the 
usual subapical blackish spot is enlarged inwards to near the origin of the third vein, and covers the small 
eross-vein and the stigma, this latter with a small clear dot at the tip; there are no rays from the spot 
towards the costa, but instead of them there is, beyond the stigma, an oblong hyaline incision ; round the 
apical margin of the wings there are seven rays: the first of them runs obliquely to the anterior margin ; 
the second and third form a border on the ends of the third and fourth veins; the fourth and fifth rays 
cross the second posterior cell; the sixth forms a border to the posterior cross-vein; the seventh arises 
from the fourth vein, between the two cross-veins, and goes in oblique direction towards the hind margin. 
On the costa, before the end of the second vein, are two small white dots; a similar dot is in the cubital 
cell, just under the tip of the hyaline incision ; there are also three hyaline dots in the first posterior cell, 
a larger one next to the small cross-vein, and two others inwards of the rays on the third and fourth veins. 
Hab. Mexico, Chilpancingo 4600 feet and Amula 6000 
feet, both in Guerrero (7. H. Smith). 
One male and two females. 
l i U. a, v. d. W. 
A, Urellia solaris. eugenia, V 
Trypeta solaris, Low, Monogr. Dipt. N. Amer. i. p. 84, t. 2. fig. 19"; iii. p. 325, t. 10. fig. 19°. 
Urellia solaris, Gig].-Tos, Mem. R. Accad. Sci. di Torino, ser. 2, xlv, (sep.) p. 54°. 
Hab. Nortu America ! 2.—Mexico 2, Omilteme in Guerrero 
8000 feet (H. H. Smith). 
A single female specimen. 
5. Urellia vicina, sp. 0. U. solaris, Low. 
Grey ;- head and legs yellowish-rufous ; scutellum with two bristles; the black spot on the wings including 
the small cross-vein, a small fuscous dot on the middle of the fifth vein. 
Length 2 millim. 
Front broader than the eyes, greyish, at the sides and anteriorly pale rufous; frontal bristles black; on the 
vertex behind the eyes a row of yellow bristles; face and cheeks yellowish-rufous; oral margin slightly 
prominent. Antenne rufous, reaching to the middle of the face. Proboscis and palpi pale rufous. 
Thorax and scutellum grey ; pleure somewhat rufous. Abdomen greyish-cinereous, with whitish hairs ; 
ovipositor shining black, as long as the last two segments together. Legs yellowish-rufous. Wings 
elongate, whitish-hyaline, beyond the middle with a large, quadrate black spot, between the costa and 
the fourth vein, the spot including the small cross-vein and emitting eight rays to the margin: the first 
