AUSTRALIAN HYMEN OPT ERA CHALCIDOIDEA , IV.—GIRAULT. 
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propodeum and three broken stripes (distinct laterad) across abdomen out from base, dusky 
Llack. Scape, pedicel and legs concolorous, rest of antenna dusky yellow. Second funicle 
joint longest, joint 1 shortest of the funicle, longer than wide, subequal to the pedicel. Mandi- 
bles tridentate. Club with a spinelike seta. 
Habitat: Mittagong, New South Wales. 
Type: No. I. 1230, South Australian Museum, Adelaide. 
2. QUADRASTICHUS LATITHORAX new species. 
Female: — Length, 1.15 mm. 
This species is like Pentastichus Ashmead but the antennae 8- jointed with one distinct 
ring- joint, the club only two- jointed, the pedicel not much longer than the first funicle joint, 
rather subequal to it, all the funicle joints longer than wide. Body very short and stout, with 
a peculiar habitus, resembling somewhat a Hadronolus , the abdomen very short, fiat, triangular. 
Mandibles bidentatc, the inner tooth broadly truncate. Otherwise as in Tetrastichus llaiiday. 
Marginal cilia short. Purple-black, the antenna) and legs lemon yellow, also the abdomen but 
in the dorsal aspecr margined all around (apically broadest) rather broadly with purple-black. 
Wings hyaline. Sculpture of thorax like that of Tetrastichus but exceedingly fine. Pedicel 
black above near base. Distal club joint a little the longer, with a short nipple, the funicle 
joints subequal. 
Male: — Not known. 
Described from a single female captured by sweeping foliage of lantana and other trees 
in an open field near town, October 21, 1911. 
Habitat: Mackay, Queensland. 
Type: No. Tty 1825., Queensland Museum, the above specimen on a slide. 
3. QUADRASTICHUS SANNIO new species. 
Female: — Length, 1.60 mm. 
Like the preceding but much larger and normal, the tibiae ringed with purple just below 
imees, the antennae sooty, the club white, its two joints coalesced or nearly. Mandibles 
tridentate. Scape pale, purple along dorsal edge; pedicel purple. 
Male: — Not known. 
Described from one female captured by sweeping in forest, July 3, 1913. 
Habitat: Nelson (Cairns), Queensland, 
Type: No Hy 1826, Queensland Museum, the above specimen on a tag, the head on a 
•slide. 
4. QUADRASTICHUS AENEUS new species. 
Female: — Length, 1.00 mm., excluding valves of ovipositor which are exserted for a 
third of the length of the abdomen. 
Dark metallic green, the wings hyaline; coxae and proximal parts of the femora con- 
colorous, the rest of the legs pale straw yellow. Sculpture as in Tetrastichus ; propodeum 
finely transversely rugulose, the median carina apparently absent. Antennae brownish black, the 
three funicle joints subequal, each a little longer than wide. Mandibles tridentate. 
