30 Ml'. R. E. Turner on 



broadly at the apex ; eighth sternite broad, shallowly bi- 

 sinuate at the apex, the apical angles not produced. Third 

 abscissa of the radius nearly twice as long as the second, the 

 latter nearly as long as the space between the recurrent 

 nervures on the cubitus. Third cubital cell extending on 

 the cubitus a little beyond the apex of the radial cell. 



Hab. Portuguese E. Africa, Beira (P. A. Skeppard). 



The broad, bisinuate, eighth sternite distinguishes this 

 species from all others of similar colouring. 



34. Tachytes krisienseni, sp. n. 



$ . Nigra ; capite subargenteo-pubescente ; thorace segmentoque 

 mediaiio sparse griseo-aureo-pubescentibus, abdomine griseo- 

 aureo-pubescente, segmentis dorsalibus 4 basalibus fasciis apica- 

 libus distinctis ; area pygidiali angusta, pallidissime aureo- 

 pubescente ; tegulis testaceis, segmentis abdoraiiialibus margiue 

 apicali anguste brunneis ; tibiis, tarsis, femoribusque posticis 

 ferrugineis ; alls hyaliuis, venis fusco-ferrugiaeis. 

 Long. 9 mm. 



? . Eyes separated on the vertex by a distance equal to 

 the length of the two basal joints of the flagellum ; clypeus 

 subtruncate at the apex, the apical margin rather broadly 

 depressed; antennae short, the basal joint of the flagellum 

 fully half as long as the second, which is a little shorter 

 than the third ; vertex not distinctly punctured. Median 

 segment about half as long again as the scutellum, without 

 a longitudinal sulcus on the dorsal surface. Abdomen 

 rather slender, thinly clothed with short, dull, pale golden 

 pubescence, which is denser and brighter on the marginal 

 fasciae. Pygidial area narrow, nearly twice as long as the 

 greatest breadth, narrowly rounded at the apex. Second 

 sternite minutely and closely punctured. Only three 

 slender spines visible on the basal joint of the fore tarsus. 

 Second abscissa of the radius very little shorter than the 

 third, longer than the distance between the recurrent ner- 

 vures on the cubitus. Third cubital cell much more than 

 half as long as the second on the cubitus, extending further 

 than the apex of the radial cell. 



Hab. Abyssinia, Harar {G. Kristensen), May. 



Described from a single specimen. It is possible that 

 the spines on the fore tarsus may have been broken off on 

 the basal part, but the specimen is in good condition and 

 shows no signs of damage. The species may be distinguished 

 by the narrow pygidial area, the short joints of the flagellum, 

 and the small and slender form. 



