Part II. 1 
Waterston : On Chalcidoidea. 
35 
of con fluent punctures or at any rate is crossed by 5 or 6 very short rugae. 
(A similar shorter sulcus exists in R. mirus). At the inner end of the 
sulcus the surface of the propodeon is distinctly hollowed anteriorly, 
sloping upwards again towards the mid keel. The spiracular area is 
thus somewhat elevated but the sui'face rises slightly beyond the spiracle 
itself around which is a narrow smooth gleaming very shallow sulcus. 
Roptrocerus sulcatus sp. n. 
$. Dark aeneous, green metallic, the coxae, particularly the hind 
pair, blue. Wings hyaline. Base of abdomen (at sides only) paler. 
Antennae dark except for the slightly paler scape, ovipositor barely 
lighter than the body ; legs, femora especially the hind pair smoky, 
trochanters, tibiae and tarsi paler. A moderate sized species distin- 
guished by the structure of the propodeon. 
Head broader than deep (9 : 8), from in front broadly oval ; orbits not 
greatly divergent interiorly. At their nearest the eyes are a little over 
Sg- diameters apart, while at the base line 4|. Toruli circular, simple 
separated by the diameter of either and distant from the orbits and the 
clypeal edge respectively 3 and 4 diameters. They lie well above the 
base line of the eyes and a line across their upper edges bisects one midway 
between the anterior ocellus and the middle of the clypeal edge. Clypeus 
narrow oblong, slightly salient its edge nearly straight and separated on 
each side by a shallow dimple from the rest of the mouth edge. The eye 
is half the depth of the head and the malar space one quarter. Reti- 
culation everywhere fine and a little raised, coarsest on the vertex, finest 
above the toruli and generally regular, but below the toruli more trans- 
versely drawn out and scaly. Only the actual clypeal edge smooth. 
All over the Irons shows numerous extremely minute irregularly disposed 
fine bristles and there are about half a dozen stronger along each orbit. 
On the clypeus and between the toruli and the genal keel are numerous 
clear setigerous pits penetrating the chitin. Above the mouth and 
clypeal edges the majority of these pits emit short hyaline quickly tapered 
bristles, but on the mouth edge the bristles become longer. The clypeus 
bears 24-26 such pits, 4 of which (2 in the centre and 2 near the edge) 
have long bristles ; from below the clypeus rises a bristle at each angle. 
Antennae (Fig. 19, h) length 1-32 mm.; Scape (not quite 6 : 1), pedicei 
(2 : 1) about J of the scape. Ring joints, together i as long as the pedicel. 
The second a little broader than the first and half as broad as the third 
(modified first funicular). First normal funicular joint longer (11) than 
any of the four succeeding ones (9) which are equal, joints 1-3 with a 
breadth of 8, 4-5 breadth of 9. Club in the ratio 7 : 4 : 3 : 1, with trans- 
verse sutures 10 : 7 : 3. Scape and pedicel rough, raised reticulate : 
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