322 Mr. R. E, Turner on Fossorial Hymenoptera. 



the second joint of the flagelluni. Thorax and median .seg- 

 ment very closely and minutely punctured, rather thinly 

 covered with very short, delicate, golden pubescence ; tlie 

 posterior slope of the median segment finely transversely 

 striated, with a deep median sulcus, Pygidial area elongate- 

 triangular, shining, sparsely and rather strongly punctured, 

 very narrowly truncate at the apex. Comb of the fore tarsi 

 long ; tibioe with short golden pubescence. Iladial cell 

 rounded at the apex, not truncate, third abscissa of the radius 

 longer tiian the second, which is equal to the space between 

 the recurrent nervures on the cubitus. Tarsal ungues very 

 long, as in the genus NUogonia. 



Hah. British East Africa, Siniba, 3350 ft. (5. A. Neave)^ 

 April ; Makindu, 3300 ft. [S. A. Neace), April. 



This seems to belong to the group of T. quadricolor, 

 Gerst., but is a smaller and less robust species, and the eyes 

 are nearer together on tiie vertex; the colour of the v^^ings is 

 also different. The elongate ungues are very remarkable. 



Tachysphex depilosellus, sp. n. 



2 ■ Nigra ; mandibulis basi, clypeo dimidio apicali, scapo, flagello 

 arfciculo priroo, articuloque seeundo basi, callis humcralibus, 

 abdomiue, pedibusquerufo-ferrngineis ; alls anticis fuscis, posticis 

 pallida fasco-hyalinis ; veuis nigris. 

 Long. 12 mm. 



? . Clypeus very broadly rounded at the apex, somewdiat 

 dt'flexed from the middle, the apical half shining, with a few 

 large scattered punctures ; the base" of the clypeus and the 

 front clothed with very short, sericeous, silver pubescence. 

 Tiiorax closely microscopicallj' punctured, the mesonotum 

 and scutellum bare; dorsal surface of the median segment 

 opaque, very closely and microscopically punctured, the sides 

 of the segment obliquely, the apex transversely striated. 

 Abdomen slender; pygidial area elongate-triangular, sparsely 

 punctured. No pubescent fasciae on the dorsal segments. 

 Tarsal comb long, the basal joint of the fore tarsus with eight 

 spines. Radial cell broadly rounded at the apex; second 

 abscissa of the radius longer than the third, which is longer 

 than the space between the recurrent nervures on the cubitus. 



Hab. N. Rhodesia, Pakasa (0. Silverlock) ; January. 



A very slender species, easily distinguished by the fuscous 

 wings from any other Ethiopian species with the abdomen red. 



