Species of Fossorial Symenoptera from Africa. 749 



the median segment, the five basal joints of the flagellum very 

 short and not stout, the five next longer and stouter, the apical 

 joint longer and slenderer than the penultimate and slightly curved. 

 Ocelli situated in a very wide triangle on the vertex, the posterior 

 pair nearly half as far again from each other as from the eyes. 

 Thorax short and stout, a distinct groove in front of the mesopleurae 

 for the reception of the anterior femora, the mesosternum notched 

 at the sides close to the groove and produced into two short teeth. 

 Intermediate trochanters without a tooth ; posterior tibiae thickened. 

 Abdomen petiolate, the first segment gradually broadened from the 

 base, nearly twice as wide at the apex as at the base, distinctly 

 longer than the apical breadth, not constricted at the apex ; second 

 segment large and globose, constricted at the base ; sixth segment 

 broadly triangular, with a narrow pygidial area. Closely and rather 

 strongly punctured ; the punctures longitudinally confluent near 

 the apex of the mesonotum ; scutellum and postscutellum longi- 

 tudinally striated, basal area of the median segment obliquely 

 striated, a smooth opaque space on each side near the apex of the 

 basal area, the posterior slope of the median segment with a deep 

 median groove ; ventral surface of the abdomen almost smooth 

 except on the coarsely punctured second segment ; the extreme 

 apex of the sixth dorsal segment smooth. Both recurrent nervures 

 received by the second cubital cell ; second abscissa of the radius 

 shorter than the first ; third cubital cell entirely absent on the 

 right side, on the left side the third transverse cubital nervure is 

 present on the cubitus, but does not reach half way to the radius. 



Hab. N. Rhodesia, Sinapunga (Silverlock), February, 



Type in B. M, 



Differs from monstrosus, Handl,, in colour, in the 

 sculpture of the scutellum, postscutellum and median 

 segment, in the absence of a spine on the intermediate 

 trochanters, in the shape of the petiole and in the 

 absence of the third transverse cubital nervure. The 

 latter character may be an individual aberration. 



Sub-family CRABRONINAE. 

 Dasyprodus aurovestitus, sp, n. 



5 , Nigra, opaca ; scapo subtus, pronoto angustissime antice, 

 petioloque macula utrinque apicali pallide flavis; pedibus nigris 

 f usco-ferrugineo variegatis ; abdomine dense auro-piloso ; alis hya- 

 linis, costa anguste infuscata, venis nigris ; tegulis fusco-ferrugineis. 



Long. 12 mm. 



