Mr. R. E. Turner on Fossorial Hymenoptera. 447 



femoribusque anticis apice brunneo-ferrugineis ; alis nigris, 

 C£eruleo-tinctis ; tegulis brunneis. 

 Long. 18 mm. 



? . Clypeus very broadly rounded at the apex, almost 

 transverse, the apical margin narrowly transversely depressed, 

 with two small teeth on each side, finely and rather closely 

 punctured. Second joint of the flagellum as long as the first 

 und third combined ; eyes separated on the vertex by a 

 distance equal to the length ot the second joint of the fla- 

 gellum; an obscure longitudinal sulcus on the vertex behind 

 tiie posterior ocelli. Pubescence of the thorax, median 

 segment, and abdomen blackish, the median segment about 

 lialf as long again as the scutellum, with a very obscure 

 median line. Abdomen microscopically punctured, sub- 

 opaque, the pubescence on tlie dorsal surface black, a little 

 closer on the apical than on the basal portion of the segments. 

 Sixth dorsal segment rather broadly rounded at the apex, 

 clothed with stiff black hairs. Second ventral segment 

 closely and evenly punctured, the apical margin almost 

 smooth. Basal joint of the fore tarsus with five spines on 

 the outer margin. Second abscissa of the radius shorter than 

 the third, equal to the distance between the two recurrent 

 iiervures. 



Jiah. Mlanje, Nyasaland, April (^S. A. Neave). 



This is allied to T. nntaltnsis, Sauss., but I do not think 

 that it is tiie female of that species, which was described 

 from a male. The pubescence of the clypeus and front is 

 white in natalensis. The two species are doubtless very 

 nearly related. 



Tachytes nigropilosellus, Cam. 



Liris nigropilosellus, Cam. Ann. Transvaal Miis. ii. p. 132 (1910). 

 Tachytes gigas, Bisch. Arch. f. Naturges. p. 66, A, 3 (1913). 5 . 



Cameron has placed this species in the wrong genus, as 

 Bischoff thought probable. I have seen Cameron's type. 

 The species is quite distinct from natalensis, Sauss., the male 

 nigropilosellus iiaving the clypeus and front covered with 

 long black hairs and the eighth ventral segment rather 

 deeply emarginate on the middle of the apical margin, but 

 without lateral spines, whereas in natalensis the front and 

 clypeus are clothed with short white pubescence and the 

 eniargination of the eighth ventral segment is extremely 

 shallow. 



30* 



