Hy)ne)wi)ter(t. -J^'^ 



keeled on the basal half. Metanotum finely rugose, the transverse 

 keel directed ol)liquely l)ackwards in the middle : there are 2 

 irregular keels on the outer edge of the outer slope. First 

 abdominal segment roundly curved; the striae commence near 

 the base ; it is broader at the base than it is in the other genera ; 

 the striae become weaker towards the apical segments ; the apical 

 3 segments are smooth ; the basal are longer than broad ; the 3rd 

 is produced bluntly at the apex below. Pleurae closely, finely 

 rugose : the apex of the pro- striated. Antennaj not (juite so long 

 as the body ; the scape rufous. 



Mesostenus hasimacida, sp. nov. 



Black, the thorax, except the breast, red, the lower edge of the 

 mesopleurae and of the raetapleurae more broadly, black, as is also 

 the basal half of the propleurae ; a conical mark (the broad end 

 above) in the centre of the face, extending from the top to the 

 bottom, the upper half of the clypeus, a short line in the centre of 

 the inner orbits and the palpi, pale yellow, a broad black band of 

 equal width on the base of the metanotum ; a mark on the sides 

 of the second abdominal segment and the whole of the sixth and 

 seventh yellowish white. Legs black, the anterior in front, the 

 apical half of the middle femora below% the middle tibiae behind, 

 the base of the hind tibae all round and the calcaria, white. Wings 

 hyaline, the nervures and stigma black. Male. 



Length 7 mm. 



February. 



Vertex below the ocelli strongly, obliquely striated. Face 

 closely rugosely, the clypeus sparsely punctured. Middle lobe of 

 mesonotum closely, strongly punctured, its apex irregularly 

 reticulated ; the lateral irregularly transversely striated, the apex 

 on the innerside punctured. Scutellar depression large, deep, 

 stoutly closely striated. Scutellum shining, sparsely punctured 

 along the sides. Base of metanotum smooth, the rest I'atlier 

 strongly and closely reticulated. Propleuras strongly irregularly 

 striated. Mesopleurae closely, coarsely punctured, the upper part 

 at the base and the lov^er at the apex striated. Metapleur* 



