Descriptions of Neiv Species of Parasitic Hymcnoptera. 149 



smooth spaces. Metapleurae more strongly and closely punctured 

 and more distinctly striated. The whole median segment is thickly 

 covei'ed with white pubescence. First abdominal segment smooth ; 

 the sides of the post-petiole sparsely punctured ; the second and 

 third segments are closely, finely punctured ; the others smooth 

 and shining. 



Mesostenus lissonotus, sp. nov. 



Black, the thorax, except the prosternum, red; the eighth to 

 thirteenth joints of the antennae white, the apical joints fuscous ; 

 the labrum, a narrow line on the apex of the first and second 

 abdominal segments, the apex of the fifth more broadly and the 

 whole of the following white, the four front legs dark red, the greater 

 part of their coxae and trochanters black. Palpi blackish. Wings 

 hyaline, the nervures and stigma black ; areolet minute, almost 

 square ; the recurrent nervure received at the apex ; the transverse 

 median nervure received behind the transverse basal. ? . 



Length 14 mm. ; terebra 25 mm. 



Cape Colony. George. East London. 



Front and vertex smooth ; a stout furrow, obscurely striated on 

 either side on the former. Face in the centre above irregularly 

 striated. Clypeus broad, smooth, shining, bordered laterally by a 

 deep furrow, curving upwards on to the face, which, in the centre, is 

 not separated from the clypeus. Mesonotum shining, impunctate ; 

 the furrows crenulated. Sides of scutellum strongly punctured. 

 Base of metanotum strongly punctured, more or less striated at the 

 base ; the rest closely, strongly striated ; the apex more strongly 

 and less closely than the base. Propleurae smooth ; the centre with 

 a striated band ; the lower part black. Mesopleurae strongly, closely 

 punctured, the upper part at the base striated, the apical smooth. 

 Metapleurge strongly, closely punctured, in the middle more or less 

 striated. Basal segments of abdomen closely punctured ; the apical 

 and the first segment smooth and shining. The apex of the third 

 segment may be narrowly white ; the hind femora and tibiae may be 

 rufo-testaceous ; the hind coxae are strongly and closely punctured. 



Mesostenus parvidens, sp. nov. 

 Black, the thorax, except the prosternum, black ; the sides and 

 apex of the post-petiole, a narrow line on the apex of the second 

 abdominal segment, white, largely tinged with red; the greater part 

 of the penultimate and the whole of the last segment, white. The 

 sixth to eleventh antennal joints white, except above. Legs black ; 



