STUDIES IN THE FOSSORIAL WASPS. 739 



punctured, the posterior slope very steep. Abdomen lather 

 closely punctured ; the apical margins of the segments rather 

 bi'oadly depressed and smooth, more broadly in the middle than 

 at the sides, the apical segment testaceous and thickly covered 

 with fulvous bristles. Radial cell bluntly rounded at the apex, 

 not detached from the costa ; second abscissa of the radius a 

 little longer than the first, but scarcely more than half as long as 

 the third, the third cubital cell longer on the radius than on the 

 cubitus, second recurrent nervure received at about one-quarter 

 from the base of the third cubital cell. Ungues cleft. 



(S . Clypeus slightly convex, rather narrowly truncate at the 

 apex and armed with a row of three very minute teeth. Antenna) 

 no longer than the thorax and median segment combined, tapering 

 slightly towards the apex. Eyes convergent towards the clypeus, 

 the inner margin almost straight. Head and thorax finely and 

 closely punctured ; pronotum strongly narrowed anteriorly, the 

 anterior margin slightly emarginate, posterior margin strongly 

 arched. Abdomen shagreened, very slender, slightly tapering 

 to the extremities, the basal segment distinctly longer than 

 the second. Hind tibife finely serrate, all the tarsal ungues 

 cleft. Second abscissa of the radius half as long again as the first 

 a.nd only a little more than half as long as the third, second 

 recurrent nervure received at about one-quarter from the base of 

 the third cubital cell. 



Ilab. Willowmore, Cape Colony ; November to January 

 (i)r. Brauns). 



The male comes very near Cameron's genus Odontotliynnus, 

 which I have elsewhere treated with some doubt as a synonym of 

 Anthobosca ; but Cameron states that the posteiior tarsal ungues 

 in his genus are simple. Even if he is correct as to this character 

 it would not be sufficient to justify the formation of a genus on 

 one sex only, and his remarks show that he has no knowledge of 

 the genus Anthobosca. I suspect that the present species may 

 prove to be identical with Plesia leucospila Cam., with the 

 description of which it agrees fairly well, but the mesopleurse 

 are rather strongly though not very closely punctured, not almost 

 smooth as in Camei'on's description. In the broadly rounded 

 apex of the radial cell this species diflfers from A. natcdica 

 Turn., in which the cell is subacute, but agrees with A. arahica 

 Turn. 



*22. Anthobosca leucospila Cam. 



Plesia leucospila Cam. Rec. Albany Mus. i. 5, p. 319 

 (1905), $. 



5 . It is almost certain that Cameron has misplaced this 

 species. It is possibly identical with A. eryihronota Cam., which 

 has a similar colour variety, in which case the name leucospila 

 should be used for the species. But Cameron states that the 

 pleurae are almost smooth, whereas in eryihronota the mesopleurse 



