Part II.] 
Waterston : On CJialcidoldea. 
43 
Proportions of taisal joints : — 
1 
2 
3 
4 
I 
• 
• • 
• 
20 
25 
20 
35 
II 
. 
. 
. 
32 
30 
25 
35 
III 
• 
• 
• 
• 
35 
35 
30 
45 
Abdomen : tbe sixth tergite has a posterior row of 16-17 short bristles, 
with one or two more between, and 2-3 outside the spiracles. Ovipositor 
as in all of this group stout ; fore portion of the sheath two-fifths of the 
base. 
Length about 2 mm. ; alar expanse, nearly 3| mm. 
cj. Head very slightly broader than in the$; the three minute clypeal 
notches more distinct ; face above the clyp)eus a little swollen. Antenna : 
length '88 mm. ; scape (17 : 6) externally swollen, longer (21 : 8) in 
proportion to the pedicel than in the $ ; sense organ covering about three- 
fourths of the ventral surface, fringed with onh'^ three rather long 
bristles ; funicle and club cylindrical, joints of the former in the ratio 32 : 
38 : 42 : 40 and of the latter 30 : 26 : 27. In the same scale the breadth 
of the first two joints of the funicle is 24, and of the remaining joints 
(except the diminishing third of the club) 22. 
Propodeon ; spiracle relatively a little smaller, its posterior margin 
about the level of the forking of the lateral keel. 
Wings ; Forewings over twice as long as broad ; length 1*25 mm. ; 
breadth *6 mm. Hindwings, length 1 mm. ; breadth -25 mm. 
Abdomen ; Posterior row of sixth tergite 12-13 bristles, with 1-2 
outside, and 1-3 on the inside towards the middle, near the spiracle, 
between the styleta are six bristles (3, 3) ; there are also two outside, and 
two (1, 1) in front. 
Length, nearly 1| mm ; alar expanse 3 mm. 
Type ^ in British Museum Collection, one of a series of both sexes ; 
For. Zool. Coll. Dehra Dun, 21st August 1915. (C. F. C. Beeson). 
Host : larvae of Hypsipyla rohusta Moore (Pyralidae) ; “ Flies out of 
Toon shoots.” 
Except in the propodeon T. spirahilis runs extremely close to T. 
tachos Wlk., 1839,(;J(Britain). In the British species the antennae are 
blackish brown, nowhere paler ; head, thorax and abdomen black, with 
very dark blue metallic reflections. In some lights the head has faint 
greenish tints overspreading the blue which again on the disc of the 
abdomen passes into purplish. The abdomen is most shming ; head and 
[ 93 ] 
