340 Mr. R. E. Turner on Fossorial Tlijmenoptera. 



^ . Mandibles witli a small tooth on the interior margin 

 near the apex. Clypeus longer than broafl, strongly emar- 

 ginate at the apex, the labrum short. Antennae separated 

 tVora the base of the clypeus by a distance equal to a little 

 more than half the length of the scape ; flagellum gradually 

 thickened to the apex ; the eleventh and tenth joints normal, 

 broader than long; the apical joint rounded at the apex, no 

 longer than the penultimate. Eyes strongly convergent 

 towards the clypeus, separated at the base of the clypeus by 

 a distance scarcely exceeding the length of the scape. Median 

 segment distinctly but not strongly concave on the posterior 

 surface, the angles not excised. Second ventral segment 

 armed with a strong tooth, sixth widely eraarginate at the 

 apex, seventh with the sides raised and forming lateral 

 carinas ending in a blunt tooth. Hypopygium with three 

 short spines. Second cubital cell not petiolate, second 

 abscissa of the radius shorter than the first. Cubitus of the 

 hind wing originating a little before the apex of the sub- 

 median cell, from the apex of the median cell only one vein 

 is emitted. 



Hah. Haut-Kharoum, Kaemenogrk (Escnlera). 



This belongs to the group clavicornis, Ha:idl. ; the other 

 species of the group are from S. Africa. 



Stizus cinguJiger, Sm. 



Larra cinguligera, Sm. Cat. Hyra. B.M. iv. p. 341 (1856). 5 . 

 Stizus clavicornis, Haudl. Sitzungsb. Akad. Wiss. Wien, ci. p. 95 

 (1892). d$. 



Stizus tenuicornis, Sm. 



Larra temiicornis, Sra. Cat. Hym. B.M. iv. p. 351 (1856). cJ. 

 Stiztis temiicornis, Ilaudl. Sitzuugsb. Akad. Wiss. Wieu, ci. p. 173 

 (1892). 



Hah. Gambia (^Sinith). 



This is very near S. arenarum, Handl., but has the apical 

 joint of the antennas scarcely curved and rounded at the apex, 

 whereas in arenarum it is distinctly curved and truncate at 

 the apex. The first transverse cubital nervure is straight in 

 both species. Thus tenuicornis belongs to the rujicornis 

 group. 



Stizus rujicornis, Fabr. 

 Stizus scutellaris, Kirby, Bull. Liverpool Mus. p. 16 (1900). $ . 



Hah. Sokotra. 



There can be no doubt that Kirby's name should be sunk 

 as a synonym of this wide-ranging species. 



