FOSSORIAIi WASPS. 623 



*76. PiSON CLYPEATUS Cam. 



Pison dypeatus Cam. Ann. Transv. Mus. ii. p. 153 (1910), $ . 



Evidently allied to xanthopus, but the clypeus is nai-rowed to a 

 sharp point in the centre, the striation of the median segment is 

 coarser, and the second abscissa of the radius longer. 



Hab. Warmberg, Zoutpansberg district ; October. 



77. Pison in^.qitale, sp. n. 



c?. Niger; mandibulis apice fiisco-ferrngineis ; tegulis cal- 

 cariisque brunneis ; alis hyalinis, apice late infuscatis, iridescen- 

 tibus, venis nigris ; cellula cubitali secnnda minutissima aut 

 obliterata. 



Long. 7 mm. 



6 . Clypeus broad, produced into a short spine in the middle of 

 the apical margin ; clothed with silver pubescence, which extends 

 on the front as high as the emargination of the eyes. Second 

 joint of the flagellum very slightly longer than the third ; eyes 

 separated on the clypeus by a distance half as great again as that 

 separating them on the vertex ; posterior ocelli as fa"r from the 

 eyes as from each other, separated from the eyes by a distance 

 exceeding the diameter of an ocellus. Front closely piinctured- 

 rugose, the frontal sulcus obsolete, except just below the anterior 

 ocellus, the vertex closely and rather coarsely punctured. Pro- 

 notum short, as in P. ater ; mesonotum and scutellum coarselj^ 

 punctured, but less closely than the vertex, more coarsely than 

 in P. ater ; pleurae very closely punctured, but more finely than in 

 P. ater. Median segment with a deep median sulcus which is 

 very widely foi^ked close to the base, enclosing a very small basal 

 area, the branches of the sulcus obliquely striated, the main 

 sulcus extending to the apex of the segment, with a strong 

 median carina not quite reaching the apex ; on each side of the 

 sulcus the segment is very closely and finely punctured, with 

 numerous, fine, irregular stride ; the apical slope coarsely punc- 

 tured-rugose, with a deep median sulcus. Abdomen finely 

 punctured, the segments moderately depressed at the apex, the 

 apical bands of white pubescence well defined laterally, but not 

 distinct in the middle, the basal segment more sparsely and 

 strongly punctured than the second, the apical segments very 

 closely and minutely punctured ; the ventral segments more 

 sparsely but evenly punctured ; apical ventral segment very 

 shallowly emarginate, the angles not produced into points. 

 Second abscissa of the radius very short, second cubital cell 

 obliterated on the left side, very minute on the right, second 

 recurrent nervure on the right side interstitial with the second 

 transverse cubital nervure, first received before the apex of the 

 first cubital cell. Basal and transverse median nervures in- 

 terstitial. 



Hab. Mlanje, Nyassaland (S. A. A'^eave), 2300 ft., October. 



Very near ater and rhodesianus, but difl^ers in the sculpture, 



