Hymenoptera. 175 



roundly convex ; the spiracles on the 1st abdominal segment are 

 placed at the base of the apical third, the disco- cubitus is roundly 

 curved ; the 1st discoidal cellule at the base half the width it is at 

 the apex. 



Comes nearest to the American genus Opldonopterus. The 

 Tinbroken transverse median nervure in hind wings separates it 

 from its Old World allies. 



Ophiononeura flavo-maculata, sp. nov. 



Dark rufous ; the eye orbits, except in the middle above and 

 below, 2 marks, narrowed towards the base at the base of the 

 mesonotum, a shorter, narrower one at the tegular, the scutellums, 

 a line on the upper part of the propleurae, and one below and in 

 front of the tegulae ivory-yellow ; the 3 sternums, propleurae at 

 base, and the space at the sides of scutellums black, wings hyaline, 

 the stigma testaceous, the nervures black. Female. 



Length 15 mm., terebra 5-6 mm. 



Grahamstown. Feb. and April : Misses Daly and Sole. 



Head in front closely punctured ; the front keeled in the 

 centre. The rugose punctuation on the thorax runs into reticula- 

 tions in places ; the basal 3 segments of the abdomen, beneath, 

 are ivory-yellow at their junction ; the middle tarsi fuscous, the 

 hind black. 



Limneria africana, sp. nov. 



Black ; the mandibles, palpi, tegulae, a spot at its base, the 

 four front coxae and trochanters, pale yellow ; the four front 

 femora and tibiae fulvous, their tarsi fuscous, the hind legs black, 

 the fore trochanters pale yellow, the tibias broadly dark testaceous, 

 the spurs yellow ; wings hyaline, the stigma testaceous, the 

 nervures black ; areolet appendiculated, the pedicle as long as the 

 lower basal nervui'e ; abdomen black ; the 2nd segment with a 

 distinct fulvous-yellow band on its apex ; antennae black. Female. 



Length 4-5 mm. 



Museum Grounds, Grahamstown. November : Misses Daly 

 and Sole. 



Head, pro- and mesothorax alutaceous. Metanotum with 5 

 areae, besides the large posterior median, which is transversely 

 striated, strongly, distinctly, but not very closelj' ; the areola is 



