the gemis Odynerus occurring in the Ethiopian Region. 493 



truncation, the yellow very jsale ; tergites 1-5 with pale 

 yellow apical fasciae, length 12 mm. 



asmarensis, Schulthess. 

 (0. armatiscutis. Cam., comes in here.) 



43. (42) Median segment with yellow markings on sides; tergites 



1-4 with pale apical fasciae. Length 10 mm. 



arefhusae, sp. n. 



44. (33) Clypeus with distinct punctures, not striate ((^ $). 



45. (46) Large species -12 mm. to apex of tergite 2. Black; 



pronotum, tegulae, scutellum, postscutellum, laterally, 

 ferruginous; abdomen yellow, tergites 1 and 2 with 

 large median marks, black. . . . signalns. Smith. 



46. (45) Smaller species (about 8 mm.). 



47. (54) Thorax and abdomen without any ferruginous markings. 



48. (51) Males. 



49. (50) Scutellum with two linear yellow marks, tegulae yellow 



with dark centre metemmensis, Magretti. 



50. (49) Scutellum and postscutellum with yellow markings, tegulae 



ferruginous defractus, Buysson. 



51. (48) Females. 



52. (53) Pronotum, tegulae, scutellum postscutellum and abdominal 



segments 1 (except basally) wholly and 2-6 with black 

 apical fasciae, pale yellow ; median segment red. 



ukerewensis, Schulthess. 



53. (52) Pronotum with the anterior margin narrowly, abdominal 



segments 1 and 2 with complete apical fasciae, yellow; 

 segment 3 laterally yellow; clypeus three coloured, 

 yellow basally, black medially and red apically. Tegulae 

 red karibae, sp. n. 



54. (47) Thorax or abdomen (sometimes both) with profuse ferru- 



ginous markings. 



55. (64) Apex of clypeus with a distinct emargination, the lateral 



teeth sharp. Males and females. 



56. (57) Sides of median segment alone ferruginous. 



jocosus, Gerst. 



57. (56) Thorax and abdomen ferruginous. 



58. (59) Prothorax without conspicuous lateral angles; clypeus 



long, pyriform vulneratus, Sauss. 



59. (58) Prothorax with acute lateral angles, clypeus as broad as 



long. Males. 



60. (61) Anterior margin of pronotum and abdominal segments 1 



and 2 with narrow apical yellow fasciae, scutellum 

 ferruginous, only the sides with small ivory yellow 

 spots goniodes, Schletterer. 



