346 Mr. E. E. Turner on Fosscrial ITymenoptera. 



the base of the cljpeus by a distance almost equal lo the 

 length of the scape, second joint of the flagellura nearly 

 twice as \ovg as the third. Posterior ocelli nearly twice as 

 far from each other as from the eyes. Thorax very closely 

 punctured rugose ; abdomen more finely punctured ; the 

 convergent sulci on the median segment distinctly marked. 

 Third ventral segment with a strong slightly curved tubercle 

 near the middle ; sixth ventral segment with a minute tubercle 

 near the middle, seventh with a low longitudinal carina in 

 the middle. Second abscissa of the radius a little shorter 

 than the first, third cubital cell almost as long on the radius 

 as on the cubitus. Median cell of the hind wing emitting 

 two nervures from the apex, cubitus originating far before 

 the termination of the submedian cell. Anterior and inter- 

 mediate tarsi longer than the tibise. 



? . As in the male, but the ventral surface of the abdomen 

 is unarmed ; the sixth dorsal segment narrowly truncate at 

 the apex. The apical joint of the antennte is truncate at the 

 apex, not curved ; the anterior tarsi with very long spines. 

 The yellow marks on the abdomen are more extensive than 

 in the male, and there is no ferruginous colour on the two 

 basal segments ; the apical segnjent is yellow in the middle. 

 There is no fovea on the scutellum. 



The general build of both sexes is slender, as in pentheres, 

 Handl., or even more slender. 



Hah. Salisbury, Mashonaland (G. A. K. JlarsJiall), <^ $ , 

 April 1900; Simba, British East Africa, 3350 ft., April 

 1911 {S.A. Neave), 1 ^ ; Ilarar, Abyssinia {O. Kristensen), 

 1 ? . 



This is a very distinct species, approaching most nearly to 

 \\\e, fascAatus gioup, but distinguished by the armature of the 

 ventral segments of the abdomen of the male, also bj- the 

 coarse sculpture of the thorax and median segment in both 

 sexes. The first transverse cubital nervure is almost straight, 

 only very feebly bent near the cubitus. The antennte are 

 considerably thickened towards the apex. In the specimen 

 from Abyssinia the wings are fuscous. 



Stizus niger, Rad. 

 Stkus niyer, Had. Jouru. Lisboa, xsxi. p. 208 (1S81). $ . 



c^ . Niger; alls fusco-cseruleis, apice angustissime hyalinis ; oculis 



versus clypeum valide convergentibus. 

 Long. "Zl mm. 



J. Mandibles simple, without a tooth on the inner 

 margin. Eyes convergent towards the clypeus, separated by 



