HYMENOPTERA. 325 



3/. BEMBEX FLAVIPES. B.M. 



Female. Length 5 lines. Head yellow, the face above the 

 clypeus black ; a transverse reddish-yellow line in front of the 

 anterior stemma, which unites with one at the inner orbit of the 

 eyes. Thorax black above and yellow beneath ; the prothorax 

 yellow ; the mesothorax has a broad stripe on each side, two in 

 the middle, and a transverse abbreviated stripe at its posterior 

 margin ; the posterior margin of the scutellum and the post-scu- 

 tellum yellow ; a curved bisinuated yellow stripe on the meta- 

 thorax behind ; the wings hyaline, the tegulee yellow ; a large 

 spot on the breast, a small one on the coxse and trochanters, and 

 the extreme tips of the femora, black. Abdomen yellow beneath 

 and black above ; a bilobed yellow macula at the extreme base 

 of the first segment ; segments 1-5 with a glaucous-yellow band 

 on each side, which is deeply sinuated on its anterior margin ; 

 the bands on the fifth segment united ; the apical segment with 

 a black line in the middle, the sides being ferruginous. 



Hab. Australia. 



38. BEMBEX PALMATA. 



Male. Length 7i lines. Black : the clypeus, labrum, man- 

 dibles and scape yellow ; the flagellum yellow beneath ; the six 

 basal joints of the flagellum gradually thickened, the seventh 

 and following joints half the thickness of the sixth and serrated 

 beneath ; the inner orbit of the eyes with a broad yellow stripe 

 which does not quite extend to the vertex, a yellow stripe in the 

 middle of the face terminating at the anterior stemma. Thorax : 

 the posterior margin of the prothorax, an epaulet over the tegulae, 

 and a spot on each side of the scutellum, yellow; beneath, a 

 large irregular macula on the sides of the prothorax, a second 

 on the sides of the pectus, and a third on each side of the meta- 

 thorax, yellow ; the legs yellow, the anterior tarsi broadly di- 

 lated ; wings subhyaline, the nervures ferruginous. Abdomen : 

 segments 1-5 have on each side a pale stripe, which is pointed 

 within, the first and third being the narrowest; beneath, the 

 second segment yellow, with a large stout raised central black 

 carina, the posterior margin of the segment black ; the three 

 following segments have a yellow spot on each side. 



Hab. Australia? (Coll. F. Smith.) 



39. BEMBEX VARIABILIS. B.M. 



Female. Length 5-5 lines. Black : the head with a griseous 

 pubescence; the antenna obscurely testaceous beneath; the 

 scape yellow in front ; the labrum, clypeus an^mancrTbles yellow; 



* 



