LEPTODA.—URAMYIA. 251 
Head cinereous, with brown reflections ; front brownish, not fully as broad as the eyes; frontal band black, 
narrow. Antenne rufous; third joint rounded at the tip; arista black, thickened at the base. Thorax 
blackish, with grey tomentum and obsolete dorsal stripes; scutellum grey. Abdomen rufous; the black 
dorsal band interrupted at the incisions, broad on the first segment, narrow on the second, on the third 
segment extended along the hind border; on the ventral side a black hind margin appears also on the 
second segment ; the abdominal dorsum beset with many bristly hairs; macrochete only at the hind 
margins of the segments, those of the third segment very strong. Legs black; foot-claws and pulvilli 
short, the latter blackish. Tegule white. Wings greyish; small cross-vein on the middle of the discal 
cell; curvature of the fourth vein rectangular and with a short appendage; apical cross-vein slightly 
concave ; posterior cross-vein distinctly curved. 
Hab. Muxtco, Temax in North Yucatan (Gawmer). | 
A single specimen. I am in doubt as to the sex; the shape of the anus seems to 
indicate that the example is a male, but the foot-claws and pulvilli are short, a character 
usually found only in the female sex. 
URAMYIA. 
Uramyia, Robineau-Desvoidy, Essai sur les Myodaires, p. 215 (1830). 
Oxydexia, Bigot, Bull. Soc. Ent. Fr. 1885, p. xxxiii. 
Head hemispherical ; front in both sexes narrowed behind; face slightly inclined, not carinated ; eyes pilose ; 
cheeks narrow, their lower portion equalling not more than a fourth of the longitudinal diameter of the 
eyes; vibrissal swellings parallel; vibrissee nearly at the oral margin, which is not prominent. Antenne 
inserted beneath a line drawn through the middle of the eyes; third joint much longer than the second ; 
arista short-plumose on the proximal half, bare towards the tip. Proboscis short, with distinct terminal 
lips ; palpi cylindrical. Abdomen— of the male elongate, cylindrical, with the anal segment much longer 
than the preceding segment and extended in a narrow caudal process,—that of the female oblong-ovate ; 
discal and marginal macrochete are present. Legs slender, with scattered bristles; foot-claws and 
pulvilli elongate in the male. Tegule large. Apical cell opened at a short distance before the wing’s tip ; 
curvature of the fourth vein rectangular, with a short appendage ; posterior cross-vein considerably beyond 
the middle between the small cross-vein and the curvature of the fourth vein. 
Both Robineau-Desvoidy and Bigot have confounded the sexes, erroneously consi- 
dering the long and narrowed anal segment of the male as the ovipositor of the female. 
1. Uramyia producta. (Tab. VI. figg. 6; 64a, head.) 
Uramyia producta, Rob.-Desv. Essai sur les Myodaires, p. 216. 
Cinereous ; antenne, stripes on the thorax, first abdominal segment, hind borders of the following segments, 
and legs black; palpi rufous..- 
Length 18°5-25 millim. . 
Head whitish; front of the male much narrowed behind, scarcely separating the eyes on the vertex; frontal 
band black or blackish-brown, elongate trigonal in shape; lateral portions of the front with brownish 
reflections ; beard white. Antenne black, the basal joints showing a tendency to become rufous: second 
joint prominent, with bristly hairs; third joint three times as long as the second ; arista slightly thickened 
and clothed with short hairs on its proximal half. Proboscis black, with the terminal lips rufous; palpi 
pale rufous, clothed with black hairs. Thorax cinereous ; thoracic dorsum with four black stripes, the 
median ones linear and only conspicuous before the transverse suture; scutellum dark cinereous. 
Abdomen cinereous; first segment and broad hind borders to the following segments black; on the 
second and third segments the black borders somewhat extended in the middle; the whole abdomen, 
including the long anal segment, densely beset with long bristly hairs. Legs black, in one of the 
2h 2 
