SiJecies of Fossorial Hymenoptera from Africa. 737 



$ . Clypeus very shallowly emarginate at the apex. Antennae 

 stout, of even thickness throughout, as long as the head, thorax 

 and median segment combined. Eyes rather strongly emarginate. 

 Pronotum short, the anterior margin straight. Head, thorax and 

 median segment closely punctured and rather closely clothed with 

 long greyish white pubescence. Abdomen shining and very sparsely 

 punctured, thinly clothed with white pubescence ; the first segment 

 about three times as broad as long on the dorsal surface, somewhat 

 rounded anteriorly ; the other segments very slightly constricted at 

 the base ; the incision of the seventh dorsal segment as deep as the 

 apical breadth, the lateral processes rounded at the apex. Second 

 abcissa of the radius a little shorter than the third, second recurrent 

 nervure received at about one-sixth from the base of the third cubital 

 cell. 



Hah. British East Africa, foot of Kikuyu Escarpment, 

 near Naivasha, 7,300 ft. {S. A. Neave), March. 

 Type in B. M. Described from two specimens. 



Elis {Mesa) donaldsoni, Fox. 



Cosila donaldsoni, Fox, Proc. Acad. Philadelphia, p. 549 



. (1896),?. 

 Elis aliciae, Turn., Proc. Zool. Soc. London, p. 704 

 (1912), ?. 



From information received from Prof Fernald of Massa- 

 chusetts, I have no doubt that Fox was quite mis- 

 taken in placing his species in Cosila. As noticed in my 

 remarks on the species in my paper quoted above, the 

 description agrees well with Elis aliciae, which must sink 

 as a synonym. Fox was probably not acquainted with 

 any of the Old World species of Elis. 



Elis (Mesa) coeruleipennis, sp. n. 



$ . Nigra, albopilosa, crasse punctata ; alis fuscis caeruleo-tinctis. 



Long. 14 mm. 



9 . Clypeus short, finely punctured, with a low carina from the 

 base not reaching the apex. Head deeply, but not very closely, 

 punctured, the space round the ocelli shining and very sparsely 

 punctured. Scape sparsely punctured, flagellum clothed with very 

 fine greyish pubescence. Thorax deeply, but rather sparsely 

 punctured ; median segment scabrous, with a distinct median groove 

 the edges of which are raised into distinct carinae, the apex of the 

 segment margined, the surface of the posterior truncation coarsely 



