POLYMORPHOMYIA.—BLEPHARONEURA. Al} 
1. Polymorphomyia pilosula, sp.n.,¢ 9. (Tab. XII. fig. 4, wing.) 
Brownish-cinereous, with short yellowish hairs; head and legs rufous, the femora black; wings fuscous, with 
hyaline incisions, a white apical border and three white central dots. 
Length 3°5 millim. 
Head rufous; front a little broader than the eyes, parallel-sided, and with a short yellowish pilosity ; frontal 
bristles black, weak ; face perpendicular; oral margin not prominent; cheeks broad, their inferior portion 
one-third of the longitudinal diameter of the eyes; on the vertex behind the orbits a row of yellow bristles. 
Antenne rufous; third joint elongate, slightly tapering towards the tip, reaching beneath to the middle 
of the face; arista black, microscopically pubescent. Proboscis and palpi rufous. Thorax, scutellum, 
and abdomen dark cinereous, densely beset with short bristly yellowish hairs; scutellum convex, with 
four black bristles; abdomen rather flattened ; ovipositor of the female shining black, truncated. Legs, 
including the coxe, rufous; fore femora infuscated on their basal half; middle and hind femora black, 
with the exception of the base and tip. Halteres whitish. Wings broad, along the costa and the posterior 
margin slightly convex; second vein distinctly undulate; cross-veins approximated ; the posterior cross- 
vein very oblique. The wings have a general fuscous coloration, with the following portions white or 
_ hyaline: a small white dot on the proximal side of the humeral cross-vein; two hyaline incisions on the 
costa, before the stigma, and a third beyond it; at the hind margin also three incisions, one in the second 
and two in the third posterior cell ; a white apical border, beginning at the costa between the first and 
second veins, and ending before it has reached the fourth vein; in the disc are three hyaline dots in a 
triangle, one in the first basal cell, another in the first posterior cell, and the third in the discal cell ; 
there are also two small white dots in the basal portion of the inferior margin, in the vicinity of the 
third basal cell. 
Hab. Mexico, Atoyac in Vera Cruz and Teapa in ‘Tabasco (H. H. Smith). 
One male and one female. This species differs from P. basilica in having the body 
dark cinereous (instead of shining black); the front and cheeks broader, the scutellum 
convex, and the tibie and tarsi rufous. ‘The white apical border of the wings is shorter 
and does not reach the end of the fourth vein, nor has it a narrow black margin; the 
cross-veins are more distant. 
BLEPHARONEURA. 
Blepharoneura, Liw, Monogr. Dipt. N. Amer. iii. p. 272 (1873). 
1. Thorax uniformly rufous. . . . . . . . . . . 2 .  fulvicollis, v. d. W. 
Thorax rufous, with black stripes. . . . 2... 1 1 ee ee 
2, Hind femora witha black tip. . . . . . . . . . . . ) .) femoralis, v. d. W. 
’ Hind femora wholly rufous. . . - oe ee BE 
8. Tip of the wings, between the end of the second ‘and that of the fifth 
vein, with six hyaline spots of irregular form . . . . . . . qQquadristriata, v. d. W. 
Tip of the wings, between the end of the second and that of the fifth 
vein, with eleven rounded dots, eight of which form a double row . diseriata, v. d. W. 
1. Blepharoneura fulvicollis, sp.n.¢ 9. (Tab. XII. fig. 5, wing.) 
Rufous; abdomen variegated with black ; wings fuscous, with many hyaline spots of different sizes. 
Length 45-6 millim. 
Head yellowish-rufous ; front a little broader than the eyes, with parallel sides; frontal bristles black; fave 
slightly retracted: oral margin abruptly prominent. Antenne rufous; third joint elliptic, reaching to 
og 2 
