4-t6 Mr. E,. E. Turner on Fosson'al Hymenoptera. 



at Salisbury, Mashonaland (Marshall) ; Mlanje, Nyasaland 

 (Neave) ; and probably also in Uganda. 



This occurs in Nyasaland together with T. ohservabilis, 

 which is very similar in colour. 



Tachytes dilaticornis , sp. n. 



cJ . Niger, aureo-pilosus ; capita, thorace segmentoque mediano 

 pallida aureo-pilosis ; abdomine laete aureo-pubescente, segmenbia 

 dorsalibus fascia apicali densius aureo-pubescente, segmentis 

 dorsalibus et ventralibus apice late brunneis ; tegulis fuscis ; alis 

 flavis, apice latissime infuscatis ; flagello articulis 2-7 infra 

 valide dilatatis. 



Long. 14 mm. 



(J . Clypeus finely and closely punctured, very broadly 

 rounded at the apex, the apical margin narrowly depressed 

 in the middle. Eyes strongly convergent above, separated 

 on the vertex by a distance not exceeding the length of the 

 third joint of the flagellum. The second joint and those 

 following as far as the seventh joint of the flagellum very 

 strongly arcuate-dilatate beneath, the second and fourth 

 joints both distinctly longer than the third, their greatest 

 breadth exceeding half their length. Head, thorax, and 

 median segment clothed with pale golden pubescence, that on 

 the abdomen much brighter. Median segment more than 

 twice as long as the scutellum ; a depressed median line on 

 the surface of the posterior slope, but not extending to the 

 dorsal surface except at the extreme apex. Basal joint of the 

 fore tarsus with five slender spines. Eighth ventral segment 

 broadly rounded or subtruncate at the apex, without lateral 

 spines. Second abscissa of the radius sliorter than the third, 

 the first recurrent nervure as far from the second as from the 

 first transverse cubital nervure. The fuscous margin of the 

 fore wing extends to the first transverse cubital nervure. 



Hah. Kuja Valley, S. Kavirondo, British East Africa, 

 4000 ft., April 30-May 1, 1911 [S. A. Neave) ; ^ S S ■ 



This species is easily distinguished by the strongly dilated 

 antennal joints. In the species of Tachytes with golden 

 pubescence on the abdomen the form of the eighth ventral 

 segment of the male gives excellent specific characters. 



Tachytes memnon, sp. n. 



$ . Nigra ; clypeo, fronte genisque aureo-pilosis ; flagello articulis 

 ductus basalibus scapoque fernigineis ; tibiis tarsisque anticis, 



