Genera and Species of Ilifmenoptera. 153 



segment (half on the metanotum, half on the metapleurai), 

 and a lar<jje mark on the base of the mcsopleura^ on the lower 

 side, touching the keel at the base and irregularly rounded at 

 the base, pale yellow. Mesonotum closely and distinctly 

 punctured and thickly covered with short white hair. iScu- 

 telluni sparsely punctured and thickly covered with long 

 white hair, its base and apex black ; the apical black band 

 dilated backwards in the middle. Median segment strongly 

 and closely punctured and thickly covered with white pubes- 

 cence ; the supramedian area is large, about as long as broad, 

 rounded behind, transverse below ; inside it is shining, fur- 

 rowed round the edges, irregularly shagreened ; the apex with 

 a few short irregular striae; the posterior median area closely, 

 strongly, irregularly, transversely striated; the upper part 

 witli some irregular longitudinal stria?. Tlie pleune closely 

 punctured and thickly covered with short white pubescence ; 

 the propleurffi smooth and shining at the base above, the apex 

 irregularly striated. The four front legs are pallid yellow ; 

 the anterior femora are lined with black above and below, 

 the middle with black above and at the base all round ; the 

 four front tibiiB are lined with black behind; the tarsi black; 

 the hinder legs are black, except the basal half of the coxte 

 above and more or less of the basal half of the tibite, which 

 are pale yellow ; the calcaria are pale. Wings almost hya- 

 line, the apex with a distinct fuscous-violaceous tinge, the 

 stigma and nervures black ; the areolet is narrowed above, 

 but with the nervures not touciiing; the recurrent nervure is 

 received shortly beyond the middle. Abdomen black, the 

 apices of all the segments pale yellow ; the yellow marks on 

 the second and third are broader and interrupted in the 

 middle; the seventh has the apex broadly yellow. The 

 petiole is smooth, the second and third segments are closely 

 punctured ; the gastrocoeli have the basal slope stoutly 

 obliquely striated ; the ventral keel is pale yellow. 



■ Melcha, gen. nov. 



Areolet small, square, the second transverse cubital nervure 

 faint ; the recurrent nervure received between the middle 

 and the apex ; the median nervure is received behind the 

 transverse basal. Radial cellule elongate ; the apical abscissa 

 of the radius is the longer, and is curved roundly upwards at 

 the base. Antennae longer than the body, slightly thickened 

 beyond the middle, whicli is animlated with white; the third 

 jomt is slightly but distinctly longer than the fourth. Head 

 not much developed behind the eyes, where it is sharply 

 oblique ; the occiput distinctly and sharply margined. Eyes 

 very large, parallel, reaching below the base of the clypeus, 



