BRUES: PARASITIC HYMENOPTERA. 107 



projection. The raised portion of the first abdominal segment is 

 broad, but httle over twice as long as broad and widest near the middle. 



Platybkacon debilis, sp. nov. 



Type. — M. C. Z. 9,056 and Paratype. Solomons: Fulakora. W. 

 M. Mann. 



9 . Length 9-11 mm. Pale fulvous, the tips of the mandibles, 

 basal three fifths of antennae, ocellar area, and sheaths of ovipositor 

 black; apical two fifths of antennae ferruginous; last tarsal joint fus- 

 cous. Wings black, wath a pale fulvous basal band as wide as the 

 length of the stigma and a hyaline spot beneath the stigma including 

 most of the first cubital and the extreme base of the radial cell; veins 

 black except at the base of the wing and the first section of the radius 

 which is fulvous; stigma yellowish white. Head a little w^ider than 

 long, broad and rounded off behind, the part behind the eyes nearly 

 as long as the eyes; malar space shorter than the third antennal joint; 

 transverse ridge below base of antennae poorly developed, but little 

 projecting; above it is a median raised line extending between the 

 antennae and continuing to the ocelli as an impressed line. Antennae 

 56-jointed. Mesonotum, scutellum, and propodeum smooth and 

 shining, the latter without striae apically, but with the usual groove 

 just outside the spiracle. First abdominal segment as long as broad, 

 its raised portion weakly rnd irregularly striated, gradually widened 

 behind, three times as long as broad, lateral portions very unevenly 

 longitudinally striate. Second segment over twice as long as broad, 

 its oblique furrows straight, weak, scarcely crenulated, extending two 

 thirds across the segment where they widen out and disappear; lateral 

 areas smooth; middle one coarsely striate except along hind margin; 

 anteriorly with a narrow raised area which extends backw ard to a point 

 at the posterior third of the segment. Third segment sculptured like 

 the second, but more weakly, without the narrow median portion and 

 with the oblique furrow^s curved, so that they terminate at the middle 

 of the lateral margins of the segment. Fourth and following seg- 

 ments smooth; the fourth with a curved oblique furrow^ like the one 

 on the third. Ovipositor a little shorter than the body. Legs stout 

 as usual. Wing-venation as in the other species. 



Two specimens, type and paratype from Fulakora, British Solomon 

 Islands, W. M. ]Mann. 



