360 



PARASITIC HYMENOPTERA FROM THE SOLOMONS, 



tured ; second, third, and basal half of fourth segment closely 

 punctured, the following segments smooth, the last with 

 basal half white. Gastracoeli deep, smooth, striated in centre 

 of basal part. Tarsi closely spinose below. Len,gth, 1 7 mm. 



The male is smaller, has the antennae serrate, and the 

 abdominal petiole entirely red; the post-petiole is almost 

 entirely smooth ; the red on the basal joints of the antennae 

 only extends to the fourth. 



Cryptinae. 



Mesostenus insularis, sp.n. 



Black ; legs bright red, a broad white band near centre of 

 antennae, palpi pale testaceous ; apex of labrum bordered with 

 testaceous : wings hyaline, stigma and nervures black ; areolet 

 small, twice longer along radius and cubitus than along trans- 

 verse nervures, of equal width ; recurrent nervure received 

 near apex ; transverse median nervure received shortly 

 beyond transverse basal. Face closely, distinctly punctured, 

 more strongly in middle than on sides ; clypeus almost smooth. 

 Front raised in middle, sides deeply depressed ; a decurrent 

 keel from the ocelli. Mesonotum finely, closely punctured : 

 smooth on outer half of lateral lobes. Scutellum smooth and 

 shining. Metanotum at base closely punctured, more or less 

 reticulated : middle part closely, irregularly, longitudinally 

 striated, apical slope more strongly transversely striated. 

 Metapleurae strongly, irregularly striated, more strongly 

 above furrow than below it. Propleurae finely punctured, 

 finely, obliquely striated in middle. Mesopleurae distinctly 

 striated, except at apex above. Abdomen smooth and shining. 

 Metanotal teeth minute, but distinct enough. Transverse 

 median nervure in hind wings broken near the bottom. 

 Thorax fully thrice as long as wide. Parapsidal furrows 

 reaching to base of apical fourth. Post-petiole not abruptly 

 thickened ; spiracles slightly more removed from each other 

 thj^n from apex. Head wider than thorax, 



