Chaletdoid Flies from Coimbatore. 129 
Female.— Length 1-5 mm. Head much shrunken, shining, 
without distinct sculpture or ridges ; antenna as in firure 5 ; 
mesoscutum shining, finely longitudinally lineate, with a 
nearly complete, impressed, longitudinal line medianly ; 
scutellum finely reticulate, the medial sulci nearly parallel, 
propodeum very short, without distinct sculpture, the 
median carina very short and broad; marginal vein a little 
Tetrastichus okawus, Rohwer. Antenna of type. 
longer than the submarginal; abdomen distinctly louger 
than head and thorax, narrow, acuminate apically. Dark 
metallic green; head below bases of antennze, scape, pedi- 
cellum, tegule, and legs, except apical joint of tarsi, 
yellowish ; flagellum brown; wings hyaline, with very 
sparse pubescence; venation very pale brown. 
Type-locality.—Coimbatore, S uth India. 
Ty pe.—Cat. No. 20,983, U.S.N.M. 
Described from five females (one type) received from 
Ramakrishna Ayyar under his number 21 and labelled: 
“From cumbu grains. V. R. Coll. 16.xi1.16, 17.xii.16.” 
Left antenna of type on slide 881. 
Tetrastichus ayyari, sp. n. 
If the indistinctly divided club is said to be three- 
jointed, this species runs to Aprostocetus in Girault’s key. 
If the club is considered to be solid, and except under 
high magnification it appears so, it would fall in Selitra- 
chodelia. 
Female.—WLength 1:75 mm. Head not shrunken, shining, 
very finely lieate, and without ridges or depression around 
ocelli; antenna as in figure 6; the antennal club sharply 
acuminate and, when highly magnified, indistinctly divided 
Ann. & Mag. N. Hist. Ser. 9. Vol. vii. 9 
