294 Mr. R. E. Turner on Fossorial Hymenoptera. 



more slender than the others. Head coarsely punctured, a 

 little longer than broad, rounded at the posterior angles. 

 Pronotum rugose, arched anteriorly, transversely depressed 

 on the posterior margin ; mesonotum and mesopleune punc- 

 tured-rugose ; scutellum sparsely punctured. Median seg- 

 ment irregularly reticulate, transversely striated towards the 

 apex, three carinse from the base not reaching beyond the 

 middle. Abdomen shining and almost smooth, the sides 

 thinly covered with white pubescence. Tibiae thickly covered 

 with white pubescence ; the tarsal ungues tridentate, the 

 basal tooth rather blunt. Recurrent nervure received before 

 the first transverse cubital nervure, the latter rather 

 indistinct. 



Hub. Mlanje, Nyasaland (S. A. Neave) ; February. 



This may be distinguished from atra by the antennae, 

 which are very stout at the base, with the four apical joints 

 abruptly narrowed, by the position of the recurrent nervure, 

 and the colour of the wings. 



Mangesia communis, sp. n. 



3 . Niger; mandibulis fusco-ferrugineis ; alis hyalinis, leviter in- 



fuscatis, venis nigris. 

 Long. 13 mm. 



S . Mandibles quadridentate, the second and third teeth 

 much more widely separated from each other than from the 

 other teeth ; second joint of the flagellum distinctly longer 

 than the third, the apical joints slender but not elongate. 

 Head coarsely punctured, rather sparsely on the vertex, 

 punctured-rugose on the front, quadrate, the eyes separated 

 from the posterior margin of the head by a little more than 

 their own length. Pronotum transversely rugose, the ante- 

 rior margin raised, the posterior margin strongly depressed. 

 Mesonotum and scutellum strongly but rather sparsely 

 punctured, the mesopleuree rather more closely punctured. 

 Median segment irregularly longitudinally striate at the base, 

 with a low median carina reaching the apex of the horizontal 

 surface, the remainder of the horizontal surface very irregu- 

 larly reticulate, the apical slope almost vertical and trans- 

 versely striated. Abdumen shining, the sides and apex very 

 finely punctured and clothed with thin white pubescence. 

 Submedian cell closed ; cubital, transverse cubital, and 

 recurrent nervures more or less faintly indicated, the first 

 recurrent received before the first transverse cubital, the 

 second recurrent and second transverse cubital indicated by 

 white scars. 



