HYMENOPTERA. 321 



rior half of the clypeus, a line on the inner orbit of the eyes, the 

 labrum and mandibles, white ; the tips of the mandibles ferrugi- 

 nous ; the head, thorax and base of the abdomen have a thin 

 griseous pubescence ; beneath, the hinder margin of the meta- 

 thorax sometimes with a yellow spot ; the coxae, trochanters and 

 femora black; the tips of the latter, the tibiae and tarsi, pale 

 yellow; the intermediate femora serrated beneath; the tibiae 

 have a black stripe behind ; the wings hyaline, the nervures and 

 hinder margin of the tegulae ferruginous. Abdomen black : the 

 second segment with a large compressed curved tooth beneath ; 

 the sixth segment with a small trigonate tubercle in the middle. 

 Var. /3. The basal segment with a narrow line on each side, 

 and the two following segments with a curved stripe on each side. 



Hob. Albania. 



16. BEMBEX Rossn. 



Bembex Rossii, Dahlb. Hym. Europ. i. 492. 31 . 

 Hob. Spain. 



17. BEMBEX NOTATA. 



Bembex notata, Dahlb. Hym. Europ. i. 491. 28. 

 Hob. Rhodes. 



18. BEMBEX TURCA. 



Bembex turca, Dahlb. Hym. Europ. i. 488. 11. 

 Hab. Rhodes. 



19. BEMBEX BASALIS. 



Bembex basalis, Dahlb. Hym. Europ. i. 490. 20. 

 Hab. Rhodes. 



20. BEMBEX FLAVESCENS. 



Male. Length 7 lines. Head and thorax black ; the labrum, 

 clypeus, inner orbit of the eyes, the scape in front, and the man- 

 dibles, yellow ; the tips of tne mandibles ferruginous ; the outer 

 orbit of the eyes yellow; the flagellum fulvous beneath, and four 

 or five of the apical joints subpectinate beneath. Thorax : a 

 narrow line on the collar, two abbreviated ones on the meso- 

 thorax in front, a stripe over the tegulae, a narrow line on the 

 posterior margin of the scutellum and post-scutellum, a curved 

 one on the metathorax, and its posterior angles, yellow ; the sides 

 of the thorax irregularly maculated with yellow ; the legs yellow, 



