292 Annals of the South African Museum. 



nonnihil longior, lateraliter ampliato rotundatus, basim versus 

 nonnihil angustatus angulis posticis acutis, basi truncatus hoc loco 

 apice nonnihil angustior, in medio tenuiter canaliculatus, omnino 

 impunctatus ; scutellum breve, leve ; elytra elongato ovalia humeris 

 sub-obtusis at baud rotundatis, convexiuscula, utrinque quinque 

 striata ; striis dorsalibus tenuibus at profundis, prima partem sextam 

 longitudinis tantum modo attingente, secunda juxta suturali integra, 

 tertia a basi nonnihil remota punctum posticum attingente, quarta a 

 puncto antico usque ad posticum fere ducta, sinu posticali bre- 

 vissimo, quinta a ceteris late remota, supra marginali, profunde 

 sulcata. 



Long. 5 mm. ; lat. 2 mm. 



This species is very distinct from all the other South African. 



Hah. Southern Ehodesia (Salisbury). 



Teibe BEMBIDIINI. 



Gen. TACHYS, Sch. 

 Tachys secutorius, n. sp. 



Eufo-ferrugineus, nitidissimus ; antennae elongatae, articulis duobus 

 primis flavescentibus, ceteris nigris ; prothorax sensim latus, longi- 

 tudine media fere duplo latior, fere ad medium ampliato rotundatus, 

 delude baud sensim sinuatus, angulo postico acuto, baud reflexo ; 

 elytra oblongo ovata, utrinque quadrifariam striata, striis sub- 

 profundis, modice punctatis, prima integra, secunda ad apicem 

 accedente, tertia quartaque multo-brevioribus, atque ultra partem 

 dorsalem linea tenui fere integra prsdita. 



Ferruginous red, very shiny ; antennae long, slender, infuscate 

 with the two basal joints pale flavescent; legs also very pale 

 flavescent ; head smooth, the lateral sulci deep ; prothorax quite 

 smooth, nearly twice as broad as long, ampliate rounded from the 

 anterior angle to about three-fourths of the length, very slightly 

 sinuate thence to the posterior angle which is sharp and not very 

 much reflexed ; elytra oblong, ovale, three times as long as the 

 prothorax, impunctate ; they have on each side in addition to the 

 juxta-sutural stria, which is entire, three nearly equally deep dorsal 

 ones, the first of which reaches slightly short of the apex within the 

 horseshoe-like posterior enclosure, the third and fourth reach to 



