AUSTRALIAN EYMENOPTEEA CHALCIDOIDEA, VI.—GIRAULT. 
341 
NEOPOLYCYSTUS new genus. 
Male : — Head (cephalic aspect) round, the mandibles 3- and 4-dentate, the antennas 
13-jointed with three ring-joints, the club 3-jointed (but with a distal, tubercle-like fourth 
joint, the antennae 14-jointed). Parapsidal furrows two-thirds complete from cephalad. 
Scutellum simi-de. Propodeum punctate, noncarinate but with moderately short, complete 
spiracular sulci and a fovea at cephalic margin half way to spiracle from meson; spiracle not 
large. Postmarginal vein as long as the marginal, the stigmal a third or more shorter. 
Petiole slender, distinctly longer than the hind cox®, the second abdominal segment next longest 
of the segments, occupying about a fourth of the surface, its caudal margin convex, the third 
segment as long as the second, the fourth longest, occupying half of the surface and inclosing 
all of the rest. Pronotum transverse-linear. Pore wings with short marginal fringes. 
1. NEOPOLYCYSTUS INSECTIFURAX new species. Genotype. 
Male: — Length, 1.75 mm. 
Dark metallic green, the wings hyaline, the scape, legs, cephalic coxa (more or less) 
and the tegula, yellowish brown ; femora washed with metallic. Rest of antenna black, the coxge 
coneolorous. Head and thorax reticulate punctate, the abdomen polished, without sculpture. 
Pedicel slightly longer than funiele 1, which is slightly the longest of the funicle, barely 
longer than wide, the fifth or distal joint plainly wider than long; distal club joint simple. 
Described from four specimens selected at random from sixteen on a card in the 
collections of the National Museum of Victoria at Melbomme, labelled ‘ ‘ 29. Ringwood, Victoria. 
18-12-03,^’ and mounted with a flower-like cluster of red nematocerous, dipterous pupas on 
the tip of a leaf. The pupa3 bore two terminal horns cephalad. The pteromalids emerged 
through a siugie, large, round hole in the side of each pupa. 
EaMtai: Ringwood, Victoria. 
Types: In the National Museum, Melbourne, the above specimens; a slide with a head, 
hind legs and antenna?. 
TRIGONOGASTRELLA new genus. 
Female : — Head (cephalic aspect) a little wider than long, the antenna) inserted in the 
middle of face, 13-jointed with two ring-joints, the club 3-jointed, the antennge slender. 
Parapsidal furrows half complete. Both mandibles 4-dentate. Scutellum simple. Propodeum 
punctate, with a complete median carina and straight spiracular sulci, the spiracle cephalic^ 
small, round-oval. Petiole of abdomen distinctly projecting caudad of hind coxse which are 
inserted farther cephalad; petiole distinctly longer than wide. Segment 2 of abdomen notched 
at the meson caudad, longest, occupying soniew’hat over a third of the surface, segment 4 halt 
its length, distinctly longer than 3 wdiich is short. Postmarginal vein elongate, as long as the 
marginal, the stigmal distinctly shorter than either, about ha.lf the length of the postmarginal, 
slender. 
Male : — The same but the spiracular sulcus is curved and shallower, cylindrical oval 
instead of conic-ovate, the antennfe filiform. 
1. TRIGONOGASTRELLA PARASITICA new species. Genotype. 
Female: — Length, 1.35 mm. 
Dark metallic green, the wings hyaline, the scape except at tip, tibi^, knees, tarsi and 
femora (more or less) yellowish brown, the femora washed with metallic. Head and thorax 
punctate confluently. Scape slender, distal club joint simple, pedicel subequal to funicle 1 
which is somewhat longer than wide, the following joints gradually shortening. 
