HYMENOPTERA. 387 



22. OXYBELUS HASTATUS. 



Oxybelus hastatus, Fabr. Syst. Piez. 317. 4. 

 Olio. Encycl. Meth. viii. 594. 1. 

 Dahlb. Hym. Europ. i. 273. 171. 



Hub. Mogatlore ; Spain. 



23. Oxybelus lamellatus. 



Oxybelus lamellatus, Oliv. Encycl. Meth. viii. 593. 7- 

 Hab. Egypt. 



24. Oxybelus Arabs. B.M. 



Oxybelus Arabs, St. Farg. Hym. iii. 213. 3. 



Lucas, Explo, Sc. Alger, iii. 261. t. 12. f. 6. 



Hab. Algeria (Oran). 



25. Oxybelus agilis. B.M. 



Male. Length 3 lines. — Black : head punctured ; the flagellum 

 ferruginous, the mandibles rufo-piceous at their apex. Thorax 

 punctured ; a spot on each side of the collar, the tubercles, 

 tegulse in front, the squama, and the lateral margins of the scu- 

 tellum narrowly, of a yellowish-white ; the scutellum rugose and 

 having a central carina; the mucroat the base of the metathorax 

 concave above and obtuse at the apex ; the anterior and inter- 

 mediate tibia; as well as the tarsi nifo-fulvous ; the anterior and 

 intermediate tibiis outside, the base of the posterior pair and a 

 stripe within, white; the latter are fusco-ferruginous outside. 

 The abdomen with a subinterrupted yellowish-white fascia on the 

 five basal segments ; the apical segment obtuse at the apex, 

 somewhat swollen at the base, the sides margined and coarsely 

 punctured ; al)ove, the abdomen is shining and strongly punc- 

 tured, and the entire insect has a thinly scattered short griseous 

 pubescence, the face being silvery. 



Hab. India. 



26. Oxybelus tridentatus. B.M. 



Male. Length 22 lines. — Black : the head and thorax thinly 

 sprinkled with short glittering silvery hairs, most dense on the 

 face and checks ; the apex of the scape and the first joint of the 

 fiagellum yellow in front; the flagellum fusco-ferruginous; the 

 anterior margin of the clypeus armed with three stout teeth ; the 

 mandibles yellow at their base and ferruginous at their apex. 

 Thorax : the collar, tubercles, tegulae, the squama, and two 



