Part II.] 
Waterstox : On Chalcidoidea. 
41 
concavity from the median. Upper internal hollow or rib longer and 
slightly broader than the lower. First maxilla : stipes — in some speci- 
mens there are abnormally 2-3 lateral bristles ; palpus, four bristles, one 
at a half and three (one short) at the apex ; labial palpus about one-third 
of the maxillary. 
Thorax. Pronotum : the ventral edge of the overlap is straight 
turning up at right angles to the distinct spiracular emargination. The 
posterior row consists of 10-11 bristles and there are about thirty others 
(15 :15) of which the more anterior are minute, in front. Prosternum very 
broad (5 : 3), with narrow lateral angles. The pattern is everywhere 
distinct and coarsest on the lower overlaps. Mesonotum : the impressed 
lines on mid-lobe and scutellum distinct ; the former bare medianly 
with 5-6 bristles along the inside of the parapsidal furrows ; side lobes 
with seven bristles. The scutellum^ descends steeply posteriorly so that 
from above even the more anterior pair of bristles {i.e., the first behind 
the suture) are placed well beyond one half. The pattern of the thoracis 
notum is fine, longitudinally drawn out everywhere and very definitely 
raised. Prepectus long, rather narrow and not contracted to a point. 
Fig. 22. Tetraslichvs spirabilis Waterst. 
Propodeon. 
reduced only to one half the width ventrally ; with large coarse pattern 
on the upper two-thirds, smooth ventrally. Mesepisterite smooth, 
sternopleura with the same sculpture as the prepectus ; sternite rough, 
the cells larger posteriorly, with four (2, 2) short bristles posteromedianly ; 
spimeron nearly smooth, the pattern fine not raised. Metathorax : 
the post-scuteUum without median carina, surface reticulate but little 
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