510 Records of the Indian Museum. [Vor. WE 
Legs.—Uniformly pale dirty yellow, minutely pubescent. 
All tibiae practically without stronger bristles; middle pair with a 
single long apical spur, hind pair with two shorter ones of unequal 
length. 
Wings clear; 1st longitudinal vein ends at three-fourths of 
the costal cell; 3rd vein distinctly but rather narrowly forked, 
ending distinctly before middle of wing. Costal spines long, about 
twelve in number, auxiliary vein lengthened, indistinct, quite 
clear of fore border; Ist discal vein very slightly curved, 2nd 
and 4th almost straight, barely bisinuate; 3rd considerably bisin- 
uate; all attaining margin of wing. Halteres yellow. 
Described from one 2? in the Indian Museum from Calcutta, 
5-ii-o8, taken by Dr. Annandale. 
Aphiochaeta trilineata, mihi, sp. nov. 
a7. Calcutta. Long. 2 mm. 
Head.—Entire frons (which is minutely pubescent), face, 
antennae, palpi, proboscis and back of head bright yellow. 
Ocellar tubercle distinct, black, frontal groove indistinct. Median 
pair of upper row of bristles close together; 2nd row slightly 
curved ; 3rd row forming a gentle curve, on a level with the upper 
pair of the four proclinate bristles; the lower pair of the latter 
being much smaller. The various head bristles normal. 
Thorax.—Wholly yellowish, minutely pubescent, with three 
wide longitudinal dark brown stripes, one central, the others run- 
ning from the shoulders along the edge of the dorsum, but not 
quite meeting the central one on the posterior margin, where 
however, the middle stripe is continued on to the scutellum, leav- 
ing the latter with a wide yellow posterior border. Four or five 
strong marginal thoracic bristles; two dorso-central ones and two 
on the scutellum, with a minute stiff hair above each. 
Abdomen.—Yellowish, nearly bare, with indistinct darker 
marks and two dorsal rows of squarish dark brown spots, two on 
each segment. Genitalia of two pieces (like two additional abdo- 
minal narrow segments), black, and a bilobed pale yellow append- 
age, the whole organ rather hairy. 
Legs pale dirty yellow; posterior tibiae and tarsi slightly 
brownish. Middle tibiae with a row of close, minute black hairs 
and asingle long apical spur, hind tibiae with an outer row of a 
few bristly hairs and two shorter apical spines. 
Wings distinctly yellowish; a little iridescent towards tips. 
The 1st longitudinal vein ends midway between the humeral cross- 
vein and tip of 3rd vein, which is rather widely forked and ends 
just beyond middle of wing, both 1st and 3rd veins being distant 
from the border. Costal spines very short and close together. 
The auxiliary vein lengthened, rather indistinct, close to border 
of wing. Of the discal veins, the Ist is gently curved; 2nd and 
3rd barely bisinuate, 4th nearly straight, all attaining wing-border 
but the Ist and 4th indistinct at base. Halteres brownish yellow. 
