On the Hymenoptera of the Georgetown Musewm. 825 
curved ; the recurrent nervure is received almost its own length in front of it ; 
the transverse median nervure received shortly beyond the middle of the cellule. 
Legs—especially the hinder—stout, the long spur of the hinder calcaria three- 
fourths of the length of the metatarsus. 
The head is narrower than the thorax ; the temples short, rounded. Clypeus 
. not separated from the face, which is slightly, broadly dilated in the middle, 
the apex of clypeus broadly rounded ; the front depressed, narrowly raised in 
the centre. 
This genus is readily known by the 30-jointed antenne, by the furrow on the 
metanotum, long, broad projecting ovipositor and yellow colour. 
Xanthomicrogaster fortipes, sp.n. 
Luteous, the thorax paler than the head, the back of the abdomen infuscated 
in the centre, the flagellum of antenne black above, brownish below, darker 
towards the apex ; the sheath of the ovipositor black except at the base ; the 
ocelli are united by a black line closely covered with white pubescence, thickly 
on the face, apices of abdominal segments and legs ; wings hyaline, the stigma 
fuscous, the costa and nervures darker coloured. Smooth and shining, the 
furrow on the metanotum obscurely, irregularly crenulated. Female. Length 
3.5 m.m. terebra 1 m.m. 
Xanthomicrogaster ruficollis, sp. n. 
Black, the pro-and mesothorax with the scutellum and the sides and base 
of the Ist abdominal segment and the ventral surface pallid rufous, the legs of a 
paler red, the apex of the hind femora narrowly, of the tibia more broadly and 
the hind tarsi black ; antennal scape black, yellowish below, the flagellum ° 
black, fuscous below; palpi pallid testaceous, almost yellow ; wings clear 
hyaline, the nervures and stigma pallid testaceous, almost white. Sparsely 
covered with a white pile, which is denser on the legs. Shining, smooth, 
the mesonotum of equal width, about one-half longer than wide, bordered by 
a furrow, outside of which is a distinct keel. There is a narrow margined 
furrow down the middle of the metanotum. Ist abdominal segment wider 
than long, the central part narrowed obliquely towards the apex. Female. 
Length 2 m.m. 
On the same card as the above described females are some males, which 
differ in having the thorax entirely black, the colouration otherwise being 
the same. Both were bred from the Pyralid Zinckenia fascialis. 
Apanteles concordalis, sp.n. 
Black, the 4 anterior femora except at the base, the 4 anterior tibia and tarsi 
and the hind tibiz to shortly beyond the middle and the palpi pallid testa- 
ceous; the wings clear hyaline, the stigma and nervures pallid testaceous, 
almost white. Female. Length 3m.m. ; terebra 1.m.m 
Bred from Pyralid, Mesocondyla concordalis. Covered with a white pile, which is 
longest on the face and eyes. Front and vertex closely punctured ; a wide oval 
