HYMENOPTERA FROM SARAWAK, 125 
the Cyclostomi. In our genus the mesonotal furrows are com- 
plete: there is a crenulated furrow at the base of the scutellum 
which is moderately convex; there is a distinct curved furrow 
at the base of the median segment; the scape of the antennz is 
long and slender, the pedicle is of equal width, broader a little 
than long and transverse at the apex; the first 3 joints of the 
flagellum are long, fully 3 times longer than wide and of equal 
length. 
This genus clearly comes close to Chelonogastra, Ashmead 
(Bull. U. 5. Mus. xxiii, 139) from Japan. It may be known from 
our genus by the abdominal segments being unequal in length ; 
the 1st and 2nd occupy most of the surface, the 4th and 5th 
being very short; the first three joints of flagellum are scarcely 
longer than thick, etc. 
Sigalphogastra Ashmeadi, sp. nov. 
Head and thorax ferruginous, the antenne, abdomen and 
hinder legs black; the fore legs rufous; the middle dark testace- 
ous; the head and thorax smooth and shining, the metanotum 
with a few irregular keels ia the centre; the back of the abdo- 
men strongly, irregularly longitudinally striolated; the wings 
hyaline, the nervures black; the stigma fuscous below. 6? 
Length 7 mm. 
Hab. Kuching. 
Sides of the face sparsely punctured; the centre raised, 
clearly separated and smooth; it is separated from the clypeus. 
Tips of mandibles black; the palpi pale rufous. Front flat in 
the centre, bordered laterally from near the top by a blunt, 
stout keel which runs into the antennal scape. The centre of 
the petiole is raised, clearly limited; its sides raised, broad at 
the base, its apex narrowed; there is an irregular row of oblique 
keels on the sides. The area on the 2nd segment is large, 
broad at the base, becoming gradually narrowed to the apex; it 
is finely irregularly longitudinally striated, the rest more strong- 
ly transversely striated; there is an oblique keel outside this; 
the part on either side of this is stoutly obliquely striated; the 
last segment is more closely and regularly striated than the 
others. 
R. A. Soc., No. 39, 1903. 
