554 
CHARLES T. BRUES 
nearer the eye. Thoracic dorsum dull piceous, clothed with a few sparse 
pale hairs. Apparently one pair of dorsocentral macrochætæ and two scu- 
tellar bristles (te pin is inserted here). Abdomen piceous brown, the margins 
of the segments yellowish. Legs yellowish brown, more yellowish toward 
the tips. Anterior tibiæ each with a weak bristle at the anterior third ; 
middle pair with a pair at base and one weak one at the tip ; posterior 
pair with one at basal third and a very weak one at tip. Wings clear 
hyaline, the heavy veins fuscous and the discal ones weak. Costal vein 
reaching slightly beyond the middle of the wing, with extremely fine and 
delicate cilia ; first vein a trifle nearer to the humeral cross-vein than to 
the tip of the third ; third vein parallel to the costa until near its tip 
where it turns obliquely to the costa ; fourth vein curved a little at the 
base, straight elsewhere ; seventh vein obsolete. Halteres castaneous 
brown. 
One female specimen from Sattelberg, Huon Gulf, New Guinea 
(Biró, 1898). 
This species is easily recognized on account of the few setæ on the 
tibiæ. Although I have not seen the male, I do not hesitate to place the 
species in this genus. 
Chonocephalus similis n. sp. 
Male. Length 0*85 mm.; of wing 1*25 mm. Black, the antennæ 
palpi, and tips of legs brown. Head rather flattened antero-posteriorly ; 
sides of the front each with a slanting row of five proclinate bristles, the 
rows extending from the upper corner of the eye and converging below. 
Ocelli large, on a tubercle, surrounded by three small macrochætæ ; vertex 
with the usual row of bristles. Antennæ fuscous, spherical, with an 
apical pubescent arista. Palpi fuscous, stout, with numerous weak, but 
no very strong bristles. Dorsum very convex anteriorly, behind with 
a median depression, its sides strongly convergent behind ; posterior 
edge emarginate before the scutellum ; surface finely bristly anteriorly 
along the sides; one pair of dorsocentral macrochætæ and four equally 
strong scutellar bristles. Abdomen piceous, slender, evenly narrowed be¬ 
hind. Hypopygium globose, dark testaceous; no projecting lamella visible. 
Legs slender, yellowish brown, the femora and tips of the tibiæ darker ; 
covered with unusually stout hairs, but destitute of strong bristles ; the 
posterior tibiæ each with a single weak spur and a few rather indistinct 
rows of black hairs internally at tip. Wings very large, tinged with blackish 
due to a covering of microscopic hairs; the costal vein reaching slightly 
beyond the middle, with obsolete cilia ; first vein fading out near the 
middle of the costal; third vein strong, sinuate, not furcate; fourth vein 
