448 HYMENOPTERA. 



base of the femora, yellow. Abdomen ferruginous ; the basal 

 segment black, with a narrow yellow line on the apical margin. 



Hob. The Gambia. (Coll. F. Smith.) 



55. CERCERIS FLAVIFRONS. 



Male. Length 4 lines. Head and ihorax black, closely 

 punctured ; the face, scape in front, and the mandibles pale 

 yellow; a minute yellow spot behind the eyes; the flagellum 

 fulvous towards the base. Thorax : an interrupted line on the 

 collar, a spot on the tegulae in front, two spots on the scutellum, 

 the post-scutellum, and a large oblong macula on each side of the 

 metathorax and the legs, yellow ; the femora above rufo-piceous, 

 the tarsi and the posterior tibiae slightly ferruginous ; the wings 

 fusco-hyaline, with a violet iridescence. Abdomen pale ferrugi- 

 nous, with a yellow line on the posterior margin and at the sides. 



Hab. West Africa. (Coll. F, Smith.) 



56. CERCERIS PERBOSCIT. 



Cerceris Perboscii, Guer. Icon. Reg. Anim. 444. 

 Hab. Senegal. 



57. CERCERIS PICTA. 



Cerceris picta, Dahlb. Uym. Europ. i. 222. 

 Hab. Senegal. 



58. CERCERIS FULVIVENTRIS. 



Cerceris fulviventris, Guer. Icon. Reg. Anim. p. 444; Voy. Abyss. 



Lefeb. vi. 358. 

 Hab. Senegal; Abyssinia; Gambia. (Coll. F. Smith.) 



59. CERCERIS LUXURIOSA. 



Cerceris 'luxuriosa, Dahlb. Hym. Europ. Synop. Spec. i. 498. 

 Hab. Abyssinia (Syrkut). 



60. CERCERIS SYRKUTI. 



Cerceris Syrkuti, Dahlb. Hym. Europ. Synop. Spec, i, 51)2. 28. 

 Hab. Syrkut (Abyssinia?). 



61. CERCERIS FORMOSA. B.M. 

 Cerceris formosa, Dahlb. Hym. Europ. Synop. Spec. 499. 12. 

 Hab. Port Natal. 



