440 
CHARLES T. BRUES 
to a long apical spur. Hind tibia with two macrochætæ, one externally 
at basal third and a second externally just before tip, in addition to 
four apical spurs ; internally at apex with several comb-like rows of 
appressed flattened bristles. Wings hyaline, narrow; costal vein with 
moderately fine, closely placed cilia, ending barely beyond the middle 
of the wing, first vein ending one-third nearer the tip of the third 
than the basal cross-vein ; third vein bare, not forked nor swollen at 
its tip; fourth vein straight except for a moderate curve near base, 
ending much nearer the wing tip than does the nearly straight fifth ; 
sixth distinct, but the seventh almost obsolete. Halteres entirely black. 
Female. Length 2*8—3*2 mm. The palpi and antennæ are orange 
yellow ; the third joint of the latter dusted with very short yellowish 
qmbescence, scarcely one-third longer than thick and bearing an arista 
about five times its own length. Abdomen without the fluting of the 
margins to the segments seen in the male and also scarcely hairy along 
the sides. Wings with the third vein faintly beset with microscopic 
bristles, more distinctly so than in the male where they are practically 
absent. Otherwise similar to the male. 
Habitat: Paraguay, San Bernardino (Fiebrig, 1908). One male and 
three femalès. 
This is a very robust species, resembling the North American 
H. Johnsoni Brues, but distinguished by its blackish antennæ and 
palpi in the male, the presence of only two scutellar birstles, and the 
equidistant bristles of the lower frontal row. It resembles still more 
closely the European H. coronata Becker, in chætotaxy and habitus, 
but the position of the lateral ocelli and the frontal bristles is very 
different. 
One of the females before me is much more pale in color, with 
the scutellum and middle legs honey yellow and the abdominal segments 
banded indistinctly with pale at apex. I believe it only a freshly emer¬ 
ged specimen however, and not a true color variety. 
Melaloncha pulchella Brues. 
Trans. American Entom. Soc., Voi. 29, p. 375 (1903). 
There is in the present collection, a single male bearing the label 
«Paraguay, Fiebrig» which probably belongs to this species, originally 
described from Songo, Bolivia. 
It differs somewhat in color, the thorax is yellowish anteriorly, 
except for a complete dark median stripe and the pleuræ are orange- 
colored on their upper half, while the second to sixth abdominal seg- 
