442 P. CAMERON. 



Ca mpop leg in i. 

 HARISTAEUS gen. nov. 



Wings without an areolet ; the transverse median nervure 

 interstitial ; the apical nervures in hind wings obsolete. 

 Clypeus distinctly separated from the face ; its apex broadly 

 rounded. Eyes large. Malar space distinct. Metanotum 

 with small round spiracles ; it is completely areolated ; the 

 areola acute at the base, angled laterally, opened at the apex, 

 therefore continuous with the posterior median area. Parap- 

 sidal furrows distinct. Post-petiole dilated, closely longitu- 

 dinally striated. Abdomen compressed from the second seg- 

 ment ; it is smooth, except the post-petiole ; the sutures are 

 distinct ; the ovipositor is longer than the abdomen. 



The spurs are moderately short, the longer hinder one is 

 as long as the third tarsal joint. The basal joint of the hind 

 tarsi more than half the length of the tibia? ; the apical two 

 joints are of equal length. Stigma large, broadly triangular, 

 the radius issuing from its middle. Radial cellule short, 

 wide, the basal abscissa of the radius one-third of the length 

 of the second ; the disco-cubital nervure broadly rounded, 

 unbroken. There is no malar furrow. Mandibles equally 

 bidentate. 



In the arrangement of Dr. Ashmead (Bull. U. S. Nat. 

 Mus., xxiii., 91) this genus runs close to Podogaster, with 

 which it has no near relationship, and that genus differs from 

 it more particularly in the metanotum not being areolated 

 and in its abdomen being greatly elongated. The present 

 genus looks like a Campoplex . 



26. Haristseus nigrifrons sp. n. 



Rufo-testaceous, the front broadly, occiput except round the edges, 

 the three lobes of the mesonotum broadly, the basal outer arese of the 

 metanotum, the breast and the lower part of the metapleurse, black ; 

 the eye orbits broadly and the tegulae clear pale yellow, the face of a 

 slightly darker yellow and with a black spot in the centre above. Man- 

 dibles yellow broadly at the base, rufous beyond the yellow, the teeth 

 black. Legs of a brighter, lighter rufous color than the body, the 

 apex of the hind tibiae and the hind tarsi black, the base of the meta- 

 tarsus paler. Wings hyaline, the stigma and nervures black. 9 . 

 Length 6 mm., terebra 2 mm. 



