AUSTRALIAN EYMENOPTERA CHALCIDOIDEA, IV.—GIRAULT . 
203 
27. TETRASTICHUS COBDENI new species. 
Female: — Length, 1.20-1.50 mm. 
Somewhat like bicolor Girault but nearly the entire head is lemon yellow, the centre of 
the occiput blackish. The scape is also yellowish. Abdomen yellowish brown at proximal 
third, otherwise dark brown with more or less obscure cross-stripes. 
Described from two females captured by sweeping, summit of Pyramid Mountain 
(3,000 feet), August 17, 1912. Dedicated with respect to Richard Cobden. 
Habitat: Kelson (Cairns), Queensland. 
Type: Ko. Hy 1760, Queensland Museum, the two females together on a tag, one head 
on a slide. 
28. TETRASTICHUS XANTHICOLOR new species. 
Female: — Length, 1.70 mm. 
Reddish yellow, the wings hyaline, the abdomen dusky and with more or less obscure 
transverse stripes ; legs yellowish brown, the front coxa dusky at base; cephalic portion of 
scutum, cephalic end of parapsidcs, sides of thorax and the propodeum dusky. Pedicel not 
elongate, somewhat shorter than the first funicle joint which is not quite twice longer than wide, 
the other two each shortening somewhat; antenna} dusky yellowish brown. Mandibles tridentate. 
Male : — Kot known. 
Described from one female captured by sweeping Leptospermum, April 16, 1913 
(H. Hacker). 
Habitat: Brisbane, Queensland. 
Type: Ko. Hy 1761, Queensland Museum, the above specimen on a slide. 
29. TETRASTICHUS IO new species. 
Female: — Length, 1.35 mm. 
Greenish yellow marked with black as follows : The abdomen with four transverse stripes, 
the first one of these interrupted at the meson, not continuous there, the fourth stripe with 
an acute, triangular projection cephalad at the meson; a round spot at base of scutellum 
between the first grooves; the propodeum; cephalic half of each axilla; the parapsidal 
furrows margined rather broadly laterad; cephalic third or less of scutum; tip of abdomen 
and last tarsal joint; centre of occiput; base of hind coxa and femur the latter along one 
side; and irregularly, the thoracic pleurum. Wings hyaline, the discal ciliation uniform. 
Pedicel longer than any of the funicle joints, the latter subquadrate, the first a little the- 
longest; club joints wider than long. Second ring-joint extremely short, the first large, distinct. 
Male : — -Kot known. 
Described from one specimen captured by sweeping forest growths on Mount Pyramid 
(1,500-2,500 feet), June 3, 1913 (A. P. Dodd). 
Habitat: Australia — Kelson (Cairns), Queensland. 
Type: Ko. Hy 1762, Queensland Museum, the above specimen on a slide. 
