Chaleidoid Flies from Coimbatore. 131 
surface with fine granulations, the median carina distinct, 
furcate caudad ; abdomen longer than head and thorax, 
gradually narrowing to an acute apex. Yellow; antennz 
dark brown; posterior surface of head, most of scutum, 
axilla, and basal margins of second and following tergites 
yellowish ferruginous ; legs yellowish, with coxe darker, 
wings hyaline, venation yellow; bristles on thorax dark 
brown. 
Tetrastichus isaaci, Rohwer. Antenna of type; a, ring-joints highly 
magnified. 
Male.—Lengtl 15 mm. Agrees with above description 
of female, except that the apex and sides (nearly to the base) 
of the abdomen are blackish. Antenna slender, clothed with 
long hair, number of ring-joints not determined. 
Type-locality.—Coimbatore, South India. 
Type.—-Cat. No. 20,985, U.S.N.M. 
Described from four females (one type) and a single male 
allotype received from Ramakrishna Ayyar under his number 
24, and labelled as reared from galls on “ Macrna arenaria.” 
Type and one paratype issued June 13, 1917, the other 
specimens issued June 11, 1917. Isaac collector. Right 
antenna of type on slide 877. 
Tetrastichus nyemitawus, sp. n. 
In the generic tabulation of Girault runs to Aprostocoloides, 
but the colour will distinguish it from any of the species 
placed in that “genus.” If the mesoscutum is said to be 
without a median longitudinal sulcus (and there is only a 
depression), this species will run to Trichaporoidella, but it 
is readily separated from curmbatorensis, which also falls there, 
by the longer and more coarsely sculptured propodeum. The 
gx 
