Species of Fossorial Hymenoptera from Africa. 747 



on the outer margin, the outer half of the joint black. Femora not 

 serrate. Second ventral segment with a very low median carina, 

 which is produced into a very small tubercle near the apex ; sixth 

 ventral segment strongly produced at the apex and almost pointed. 

 Seventh dorsal segment narrowed before the apex, the sides undu- 

 late. Thorax closely and evenly punctured. Cubital cell of the 

 hindwing emitting one vein from the apex. Angles of the median 

 segment rather prominent. 



$ . Second ventral segment shining and sparselj^ punctured in 

 the middle ; sixth dorsal segment strongly punctured and clothed 

 with short black pubescence, the extreme apex smooth and narrowly 

 rounded. 



Hal). Uganda Protectorate, Eastera Mbale district, 

 S. of Mt. Elgon, 3,700 ft. ; Mbale-Kumi Road, S. of Lake 

 Salisbury, 3,700 ft. {S. A. Mare), August; Entebbe 

 (G. C. Goivdey). 



Type in B. M. 



Allied to B. diversipennis, Sm., but differs from that 

 species in the much narrower apical joints of the male 

 antennae and in the shape of the seventh dorsal segment. 

 The sixth dorsal segment of the female is broader than in 

 diversipennis. In both sexes the antennae are black, not 

 ferruginous as in diversipennis, and the colour is otherwise 

 different, though diversipennis is so variable in this respect 

 that little importance can be attached to colour differences. 

 The male antennae are somewhat intermediate between 

 diversipennis, Sm., and monedula, Handl. 



Bembex lobatifronSy sp. n. 



(J . Niger ; clypeo, labro, mandibitlis dimidio basali, scapo supra 

 nigro-lineato, fronte supra basim antennarum macula magna bilobata 

 nigra, genis, linea transversa interrupta occipitali, pronoto, lateribus 

 dorsuli strigisque parvulis in disco, scutello, postscutello, segmentoque 

 mediano fasciis curvatis apicalibus, lateribus thoracis plus minus ve 

 nigro-lineatis, segmento dorsali primo fascia lata sinuata, secundo 

 tertio quartoque fasciis latis bisinuatis, quinto sextoque fere totis, 

 septimo apice anguste, segmentis ventralibus tribus basalibus fere 

 totis, quarto, quinto sextoque fasciis latis apicalibus, pedibus, 

 thoraceque subtus, meaosterno excepto, pallida flavis ; alls hyalinis, 

 venis bruneis. 



9 . Mari simillima, fasciis segmentorum dorsalium secundi 

 tertiique maculas nigras binas includentibus. 



Long. (J ? , 14 mm. 



