4 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. 62, 
SCHILDIA, new genus. 
Differs from all the other members of the group in having hairy 
veins and a pair of dorsocentral bristles near together before the mid- 
dle of the mesonotum. Venation as in Leptogaster, the first vein, 
however, running parallel with the costa around the curve almost 
to the extreme apex of the wing. 
Genotype.—Schildia microthoraz, new species. 
Named in honor of Pablo Schild, one of the best tropical collectors 
of small Diptera. 
SCHILDIA MICROTHORAX, new species. 
Male and female.—Antennae yellow, the third joint brown, not 
much elongated with subapical slender style which might be called 
an arista. Head black, proboscis brown. Mesonotum shining, 
brownish yellow, extending forward with a considerable hump and 
bearing a distinct median brown stripe which does not reach the scutel- 
lum. ‘The characteristic pair of dorsocentral bristles are very evident 
and in addition there are the two usual pairs, one supraalar, the other 
notopleural. Pleurae pale yellow above, brown below; the thorax is 
only a little larger than the head. MHalteres elongated and slender, 
pale yellow with a shining black knob. Abdomen very slender, 
blackish; the second joint brown with a yellow ring in the middle; 
second segment of the abdomen as long as the wing to the fork of the 
third vein or a little longer. In the male this is much less than one- 
half the entire length of the abdomen; in the female, however, it is a 
little more than one-half the entire length. Front and middle legs 
and all the coxae yellow; hind legs brownish-yellow with a blackish 
tip preceded with a yellow ring which is on the beginning of the swol- 
len portion; hind tibae brownish-black; hind tarsi brown. All the 
tarsi in both sexes are destitute of empodia and have the outer claw 
twice as long as the inner one. Wings hyaline, glabrous except the 
veins, which are distinctly hairy. The costa is ciliated from near the 
base to the apex with noticeably fine and dense hairs; the outer vein 
curves backward so as to end almost exactly in the apex of the wing. 
The male genitalia are very small, the visible portion consisting of a 
pair of small curved brown processes projecting directly backward. 
Length of male, 8.4 mm., of female, 5.9 mm. 
Described from one male and one female collected at Higuito, San 
Mateo, Costa Rica, by Pablo Schild. 
Type.—Male, and allotype, female, Cat. No. 25308, U.S.N.M. 
