the genus Odynerus occurring in the Ethiopian Region. 517 



shining, impunctate, truncate at apex, mandibles 3 dentate, medium. 

 Scutellum and postscutelium flat, not raised; median segment with 

 a distinct dorsal area, concave on the surface of truncation, the 

 sides rounded. Abdomen linear, the first segment subtruncate at 

 apex, the second of equal width. Punctured; the head and 

 thorax coarsely and rugosely; clypeus and abdomen impunctate. 

 Wings subhyaline, golden hyaline along the costa, fuscous in the 

 radial cell. 



Length 12 mm. 1 $. 



Nyasaland : Mlanje, 2300 ft,, Oct. 1913 (5. ^. Neave). 



Nearly related to 0. (S.) ferrugineus, Schulthess, but 

 distinguished from it by the impunctate clypeus and dentate 

 mandibles. 



0. (Stenodynerus) corvus, sp. n. (Plate XCI, fig. 15.) 



Q. Niger; mandibulis, scape, pedibusque ferrugineis; clypeo 

 argenteo-sericeo, apice emarginato ; alis subinfuscatis, area costali 

 obscuriore. Long. 13 mm. 



?. Similis, sed clypeo punctate, nudo. 



Clypeus convex, emarginate at apex, sides of the emargination 

 produced to form distinct teeth, the whole about as broad as long ; 

 mandibles rather long, toothed on the inner side. Anterior margin 

 of pronotum emarginate, the lateral angles acutely produced. 

 Thorax massive ; scutellum and postscutelium flat, median segment 

 concave, the lateral angles serrate. Abdominal segment 1 somewhat 

 elongate, linear, only slightly narrower than second, sternite 2 

 irregular broadly subtubereulate. Head and thorax coarsely, 

 abdomen finely and evenly punctured ; median segment with a 

 small impunctate area on the dorsal surface on each side. Clypeus 

 and coxae clothed with dense silvery pubescence, abdomen with a 

 dense pale golden sericeous pile. 



Length 13 mm. 



$ similar to cJ, but the clypeus destitute of pubescence, and the 

 median segment lacking the impunctate area on its dorsal surface. 

 fSternite 2 flat, not subtubereulate. 4 ^J ^J, 8 ? $. 



Nyasaland : Mlanje, ix. 1913 (type) (^ $ ; Shire Valley 

 {S. A. Neave) ?. 



British East Africa : Masongaleni, 3000 ft., iii.-iv. 

 1911 {S. A. Neave) ?. 



Slopes of Mt. Kenia, ii. 1911 (T. J. Atiderson). ?. S.E, 

 Rhodesia : Mount Chirinda, Gaza Land, iii. 1907. 

 {G. A. K. Marshall and David Odendal). (^ ?. 



