292 Mr. R. E. Turner on Fo.-^son'al Iljmenoptera. 



Mangesia incerta, sp, n. 



2 . Nigra ; mandibulis basi fusco-ferrugineis ; tarais articulia 



duobiis apicalibus brunneo-testaceis. 

 Long. 13-5 mm. 



$. Wiuojless; mandibles very broad, tridentate^ the upper 

 tooth broadly truncate, the outer surface of the broad apical 

 portion of the mandibles striate-rugose. Antennse thirtcen- 

 jointed, the scape strongly arched, the flagelkim nearly two 

 and a half times as long as the scape, the two apical joints 

 longer than broad, the others as broad as long or broader. 

 Head subquadrate, slightly rounded at the posterior angles, 

 strongly punctured, the punctures sometimes confluent 

 longitudinally. Ocelli absent, eyes small, ovate, reaching 

 the l)ase of the mandibles. Pronotum about half as broad 

 as the head, a little longer than broad, widened rather 

 abruptly close to the posterior angles, strongly but rather 

 sparsely punctured. Scutellum smooth and shining, tri- 

 angular; raesopleurae strongly punctured, showing a dorsal 

 lobe on each side of the scutellum. Median segment longer 

 than the pronotum, narrowed almost to a point at the base, 

 and widely furcate, gradually broadened posteriorly, the 

 apical slope oblique, the dorsal surface smooth and shining 

 at the base, very sparsely punctured at the ape.K, with a broad, 

 shallow, longitudinal sulcus, the surface of the posterior slope 

 rugulose ; sides of the segment almost smooth. Abdomen 

 shining, minutely punctured ; the first segment as long as 

 the second and rounded at the base ; si.K dorsal segments. 

 Tarsal ungues simple; intermediate tibial strongly spinose ; 

 hind tibise hair}^ but without spines. 



JIab. S.W. of Lake Chilwa, Nyasalaud; January (S. .^. 

 Neave). 



Although not taken coupled I have no doubt that this is 

 the female of a species of Mangesia. It may be distinguished 

 from females of Fristocera by the less developed fork at the 

 base of the median segment and by the presence of a sulcus 

 on the dorsal surface of the segment. The abdomen has 

 only six. distinct segments, though there is a very small 

 seventh segment, which is probably often withdrawn below 

 the sixth ; in Fristocera there are eight segments. 



Mangesia tuberculata, sp. n. 



S • Niger, albo-pilosus ; mandibulis basi fusco-ferrugineis : alis 



fusco-hyalinis ; capite angulis posticis infra tuberculatis. 

 Long. 14 mm. 



I 



