AUSTRALIAN HYMENOPTERA CHALCIDOIDEA, X—GIRAULT. 237 
GENUS CHALCURELLOIDES Girault. 
Like Chalcurella Girault but the scutellum as seen from beneath is faintly bidentate 
(or with a short emarginate plate) and the antenne bear paired branches after the fourth 
segment, the first, second and fourth funicle joints with a single, rather long branch from the 
same side, the third joint with a very short branch; first funicle joint moderately long. 
Propodeum with a groove on each side, the median groove of scutellum subobsolete. Wings 
hyaline. Antenne 12-jointed. Also somewhat like Chalcuroides. No ring-joint. Mandibles 
as in Orasema. 
1. CHALCURELLOIDES HYALINUS Girault. Male. Genotype. 
Length, 4 mm. 
4Eneous or coppery green, the propodeum green, also the abdomen and its petiole, the 
latter alutaceous, the abdomen and the posterior cox shining and smooth. Legs dark brown, 
the coxe, posterior femora and proximal half of intermediate femora (more or less) concolorous 
with the body; cephalic femur subfuscous. Antenne concolorous, suffused lightly with brownish. 
Thorax rugosely punctate, the head finely striate. First single branch of antennze shorter 
than the other two long ones. Venation nearly black. Apex of abdomen yellowish brown. 
Seutellum rugoso-punectate. Petiole twice the length of the hind coxe. Type re-examined. 
Habitat: Gordonvale (Cairns), Queensland. Forest, April 16, 1913. 
Type: No. Hy 8290, Queensland Museum, Brisbane, the male on a tag, the head on a 
slide. 
GENUS THORACANTHA Latreille. 
1. THORACANTHA EMERSONI new species. Male. 
Length, 3.75 mm. 
Metallic darkish green with purplish reflections, the long abdominal petiole concolorous, 
the abdomen brick red; femora fuscous, the tibiw lighter, the tarsi still somewhat paler; 
antenne dark brown (chocolate), their branches the same color; face longitudinally striate 
but smooth below the antenne, on each side with a groove leading from each bulla to the mouth. 
Seutellum with an obscure median groove, thickly prolonged somewhat at end, then terminating 
in a prong like the two arms of a tuning-fork. Antenne 12-jointed, with nine branches on the 
nine joints of the funicle, the single club joint as long as the scape. Mandibles with one and 
two teeth within respectively. Mesoscutum with the hind angles subacute. Thorax rugulose 
and with short pilosity, the rugulosity transverse on scutum, longitudinal on scutellum. 
Petiole about twice the length of the hind coxe. 
The antenne of this species are 12-jointed while those of Thoracantha are 11-jointed; 
also the scutellar processes seem quite different but for the present the species is placed here. 
Described from three males captured by sweeping foliage and grass in a forest, April 13, 
1913. 
Habitat: Gordonvale (Cairns), Queensland. 
Type: No. Hy 3291, Queensland Museum, Brisbane, a male on a tag. 
The species is respectfully dedicated to R. W. Emerson. 
Rightly, a study of this family should be based upon large series of reared specimens, 
since general collecting yields but very few females. For this reason, a large number of forms 
have been left undescribed. A most unsatisfactory state of affairs. However, the family needs 
intensive study over a comparatively long period of time. All the species seem to be parasitic 
upon the larve or pupe of ants. 
