Part II.] 
Waterston : On Chalcidoidea. 
11 
is smooth with at most faint indication of longitudinalae stri. Antennse 
12-jointed. Cameron failed to notice the distinct division of the club. 
Fig. 6. Trigonura ruficaudis Cam. 
а. ovipositor. 
б. mandible. 
c. hind femur, ventral edge. 
The formula is : — 
scape, pedicel, single ring joint, 7 in funicle, and 2 in club. Scape, 
averaging 9 :1 and at its widest (15 : 2) near the base rather longer than 
the sum of pedicel, ring joint, and first two of the funicle. Pedicel | of 
the scape. Funicle 1-3 equal (35)4-5 equal (30) 6-7 diminishing 27-25. The 
club (38) is equally divided. In the same ratio the breadth is 11-12. 
The sensoria occurring from the 1st normal funicular joint onwards are 
numerous, appressed, andcover the joints like scales. The base is narrow, 
oval, and the projecting flange as long as the base. On the club and apical 
half of the last funicular, the sensoria have no projections. The ring 
joint with a complete row of short bristles — (not bare C.). Total length 
of antenna 3-75 mm. 
Wings. Fore wings nearly three times as long as broad, length 3-8 mm . 
breadth 1-3 mm. Submarginal : marginal 4 :1. Postmarginal and radius 
equal, and each of the marginal. Below, the submarginal cell bears 
numerous short bristles on the basal J. From g from the base to I 
from the apex a number (about 14) of bristles gradually increasing in 
length form a row for its first half parallel to the costa and on the second 
sloping across the cell. The apical 4- of the cell is bare but before this the 
extreme costa bears 8-10 minute bristles, submarginal with 25-27 bristles. 
On the marginal, postmarginal, radius, and then in a narrowing band 
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