7A PERCY SLADEN TRUST EXPEDITION. 
transverse, the sides not projecting. Apex of postscutellum smooth, transverse. Sides 
of metanotum broadly rounded; at the outer side above is a pale, oblique, curved keel. 
Base of metapleurze aciculated, finely weakly striated; the rest irregularly reticulated at 
the base below, finely obliquely striated. First abdominal segment cup-shaped; the 
top of the basal slope roughened ; the second segment is slightly wider than long. The — 
antennal seape is yellow below. 
The male has the puncturation stronger ; the mandibles are for the greater part yellow ; 
the frontal mark is long, dilated at the top, rounded and slightly incised in the middle; 
there are two minute spots on the scutellum and two large ones on the ventral surface of 
the second abdominal segment. Clypeus longer than wide, strongly punctured, the apex 
transverse almost, the curve being very slight; above it is a depression. Legs yellow, 
the coxve behind, the four anterior femora above and the posterior entirely, black. In both 
sexes the tegulze are yellow, with a large black mark in the middle. The male wants the 
depression found on the vertex of the female. 
12. Odynerus farquharensis, sp. nov. 
Black, the upper half of the clypeus on the sides broadly, a mark shortly above the 
apex, its top with a rounded, the bottom with a triangular incision, a line on the lower 
part of the eye-incision, dilated above, a line, gradually narrowed to a fine point, on the — 
base of the mandibles, a mark, as long as wide, rounded above, transverse below, over 
the antenne, a broad line behind the eyes, a line on the base of thorax, tegule except 
for a large black spot, a mark on the sides of scutellum, postscutellum, the sides of 
metanotum broadly, an oval mark below the tegulee, a line on the apex of the first ab- 
dominal segment above and on the second all round, yellow. Legs red, the fore coxee and 
the four posterior above black, the latter red, marked with yellow below. Wings hyaline, 
tinged with fuscous, the apex fuscous violaceous. 2. 
Length 12 mm, 
Locality, Farquhar Atoll. 
Head and thorax strongly, closely punctured. Clypeus pyriform, not much longer 
than wide, rounded above, the apex depressed, almost transverse. Postscutellum and 
metanotum in one steep slope; the sides keeled, broadly bidentate below the middle. 
First abdominal segment cup-shaped, the second square, not raised at the apex. 
The male has the antennz stouter, especially towards the apex ; the scape is yellow, 
the flagellum brownish below; the hook short, thick, not reaching to the base of the last 
joint. Clypeus longer than wide, rounded above, the apex roundly incised. The yellow 
colour on the femora is more extended; the apex of the tibize yellow on the outer side 
and the cox are yellow below. ‘The pubescence in both sexes is white and dense; and 
the eye-incision is densely covered with silvery-white pubescence, 
