HYMENOPTERA. 



321 



rior half of the clypeus, a Hne 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 vellow spot ; the coxa3, trochanters and 

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

 yellow; the intermediate femora serrated beneath; the tibise 

 have a black stri])e behind ; the wings hyaline, the nervures and 

 hinder margin of the tegvdae ferruginous. Abdomen black : the 

 second segment with a large compressed cm*ved tooth beneath ; 

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

 Var. /3. The basal segment witli a narrow hne on each side, 

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



Hab. Albania. 



16. Bembex Rossii. 



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

 Hab. Spain. 



17. Bembex notata. 



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

 Hab. Rhodes. 



18. Bembex turca. 



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

 Hab. Rhodes. 



19. Bembex basalis. 



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

 Hab. Rhodes. 



20. Bembex flavescens. 



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

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

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

 orbit of the eyes yellow; the flagellum fulvous beneath, andfom* 

 or five of the apical joints subpcctinate 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. 



